Replace the exhaust manifold on the side with a broken stud. Maybe just a coincidence. Detroit Diesel Head to Manifold Gasket for 471, 671, 8V71, 12V71, 16V71, 8V92, 16V92 Click on + Pictures below to see how many are needed per engine Price:. Basically what is happening is coolant is leaking into the cylinder and being burned off as steam. I also was leaking exhaust fumes through my manifold til i did a quick temp fix which was just put high temp sealant where it was leaking and which is working pretty good. 7L Diesel engine may experience an exhaust leak due to broken exhaust manifold studs. When the exhaust manifold gasket; or gaskets fail or have an issue; it can cause problems with the performance and drivability of the vehicle. 917-107 Exhaust Manifold Clamp Exhaust Manifold Repair Kit To Cylinder Head Leak Repair Clamp Fits Front Right or Rear Left On 4. The manifold then attaches to the front exhaust pipe, which in turn attaches to other pipes, a catalytic converter and, eventually, the muffler and tailpipe of the vehicle. The exhaust manifold is bolted directly to your car’s engine block and is the head section of the exhaust system. 2009 Ford F-150 Performance Exhaust Systems Reviews. The dealer says it sounds "perfect, but we'd like to take a look for $70 anyway". Notes: Manifold converter. 6L and 63k miles. This is why your vehicle is equipped with seals and gaskets. What are the Exhaust manifolds? Exhaust manifolds are the 'leading role' of your engine exhaust system. The pics looks like a valve cover gasket leak. On cylinders 1,2,3,5,6 and 7 use stud part number W715713-S431. Instead of a common manifold that all of the cylinders share, each cylinder gets its own exhaust pipe. Owners wondering whether their Ram has broken exhaust manifold bolts will most likely notice the accompanied ticking sound coming from the exhaust manifold(s). -Inadequate reservoir volume - high air demand. The leak is caused by rust between the head & manifold. ive had some sort of noise coming from either my exhaust or a boost leak or something for a while and its making me crazy, i did have a leak where the dp connects to the catback but i have so much exhaust seal theres no way its still leaking, i also had a txs bov on for a while and thought it was leaking so i took it off and its not that either. The contact owns a 2007 Chevrolet Equinox. 00 Maybe my faith in Nissan is a little better but I'll remain skeptical. 0L Engine 5. put it back together and i still hear a high pitched whine. This has been this way for 5 years, no better no worse. or Ram Air manifold. Also check both the exhaust and intake manifolds for leaks as this may result in a vacuum leak and also the noise your hearing. Just remove loose rust and rub-in thoroughly. What does an exhaust leak sound like? You can also do an audible inspection for an exhaust leak if you know what a leak sounds like. If it's an exhaust leak you know you can just Saw-Zall the muffler off, then you won't have to worry about the exhaust leak anymore if it is one From the audio I cannot tell if it is an exhaust leak. I have replaced all of the gaskets related to the manifold/turbo/downpipe. Verify that the noise is heard in the exhaust system (in the wheel well or catalytic converter area, from underneath the vehicle). The exhaust manifold was loose and ticking, and the bolts needed to be drilled out and replaced. all pipping looks good. The dealer says it sounds "perfect, but we'd like to take a look for $70 anyway". Show Full Signature 1999 2500 QCLB, 4x4, NV4500, Super B Single, DFI 7x. Adding custom exhaust is also easy when you buy from the right places because it’s usually a matter of bolting your. i have never heard a pop or ping with an exhaust leak, altough im not an expert but it sounds like it might be in the engine. last night i took the exhaust manifold off, looked for cracks and replaced the gaskets to the block, the egr and to the turbo. The dealer says it sounds "perfect, but we'd like to take a look for $70 anyway". The long-branch manifold wasn’t compatible with the intermediate A-Body platform, so Pontiac developed a streamlined exhaust manifold that debuted in 1967 on the 400 H. Originally GM never used a gasket between the exhaust housing on the turbo to the exhaust manifold. This photo shows the manifolds with the engine removed for clarity. A log-type manifold is just a big tube bolted to the exhaust ports to collect the exhaust gas. Performance headers will also help optimize the proficiency of the exhaust system. 9% sure my manifold is leaking or cracked, so whats the easiest way to diagnose this issue without pulling the whole thing apart?. Custom exhaust is a great addition to any set of performance upgrades you’ve made and will give you an edge over your competitors. Any leak may allow exhaust gases into the cabin. A leaking exhaust manifold gasket or cracked manifold can be. 0L Fits Select 1991-1999 Jeeps (4. Unfortunately, the exhaust manifold is an absolutely critical component to your vehicle, and if you ignore your cracked manifold, the problem will only get worse and more expensive. The nuts are tight. When the exhaust manifold gasket; or gaskets fail or have an issue; it can cause problems with the performance and drivability of the vehicle. You mentioned that the engine mount will need to be. a shop trying to get me to replace too much of the exhaust. Then when i start to drive it, it sounds like the exhause manifold is leaking. Exhaust leak or lifter going bad? Question. 40 Exhaust Manifold to Head Stud Bolt & Nut Toyota MR2 mk2 3SGTE Turbo 12/1993-2000. Broken Tail Pipe: The tail pipe comes out of the muffler and exhausts the gases and fumes into the air. An exhaust manifold is an OEM-style part. sounds like an exhaust leak, but i dont think its an exhaust leak I know there are two different intake manifold gasket styles. the nuts are 16mm and can be tightened from the top of the engine bay. Joined Nov 17, 2010 · 172 Posts. I have a leak at the exhaust manifold gasket (manifold to block). It doesn't take up a lot of space in the engine bay and does the job of getting the exhaust gas back to the exhaust pipes, but it doesn't do much for performance because all the exhaust pulses dump into the same space. Guesses as to the most likely cause? If I take it in to get checked, and there is a hole somewhere, what should I expect them to suggest that I replace? I'm basically looking for what to watch out for: I. Adding custom exhaust is also easy when you buy from the right places because it’s usually a matter of bolting your. Intake manifold leaks aren't extremely common, but they do happen. Service receipt states they replaced 'Gasket-Exhaust' FP# 14036-7S001 and 'Manifold Exhaust' FP# 14002-7S00A. The nuts are tight. Simply Finding Exhaust Leaks - Manifold Leak /Flipping A Silverado Episode 10 - Duration: 4:27. I went and fixed the exhaust leak. the problem on my truck a 2002 8. it might be the turbo, but if so its a new sound. A leaking exhaust manifold will sound like an exhaust leak or an audible ticking noise from the engine compartment and will be especially pronounced when the engine is still cold. Some love the look and sound they produce, giving small-blocks the authority of a big-block. Leak in Exhaust Manifold: The exhaust manifold collects exhaust gases from the engine. If you've noticed excessive noise from your engine or the sound of an exhaust leak, check your exhaust manifold. The design of the manifold and the seal provided by the gasket assist in exhaust scavenging, where gas exiting from the cylinder leaves a vacuum which pulls in more of the air/gas mixture. Many exhaust leaks, especially if they come from the exhaust manifold, can cause a ticking noise. This is the sound of unmuffled exhaust, and is the most obvious symptom of an. I don't think you'll hear of as many manifold problems with pickup-type trucks as van-type and motorhomes. Patriot® Exhaust Products is the primary exhaust supplier to the Street Rod, Custom Car and Muscle Car enthusiast offering many value priced products. This is not an uncommon occurrence on this vehicle and is frequently accompanied by loud exhaust noises and odors in the cabin. It is important to catch exhaust problems early because if the exhaust system goes unchecked, it can lead to engine problems since the exhaust system’s purpose is the removal of harmful elements from engines. Not sure what that might sound like? This video is a good example of a textbook exhaust manifold leak. There is so much heat right there at the exhaust manifold because of the small size of the stock turbo. I'm having a problem with exhaust leaks on the left manifold. Average failure mileage is 84,000 miles. thebigdog · Registered. That said, the dealer told me last year that both sides are leaking. Exhaust manifolds are an engine component that is found on all internal combustion engines. In this area, an exhaust leak will sound more like a ticking or puffing. Inhaling exhaust fumes for an extensive amount of time is not good for you because they contain carbon monoxide. 0L Engine Exhaust Manifold Bolt Repair Kit - Driver's Front,Passenger Rear,KAP108. (the wet parts under my car are WD-40 I sprayed earlier)This video is about me fixing my loose exhaust. Check the exhaust manifold and exhaust system for leaks. At the bolts, I am not sure. If you suspect an exhaust leak, get your vehicle inspected by a mechanic as soon as possible. Lou and Dawn continued on their shopping destinations around Pahrump. When first starting the car in the morning or after it has been sitting a few hours it sounds like a small exhaust leak but after about 1 minute it seems to go away. If you've noticed excessive noise from your engine or the sound of an exhaust leak, check your exhaust manifold gaskets. The three metals have different heat ranges which cause the exhaust manifolds to wrap or crack and break the bolts causing leaks. Anyone had issues with the stock 1st gen exhaust manifolds? Mine developed a "tick" when cold which is most likely a small crack or slightly warped flange. I inspected the engine well looking for loose belts, hose clamps, tensioner, cracked exhaust manifold, or leaking manifold gasket. Featured Video: Dodge Ram Broken Manifold Bolt. 2 has what sounds like an exhaust leak when under load or mild acceleration. Exhaust Manifold to Downpipe Stud & Nut Toyota MR2 mk1 1. It ensures 7-10% of torque and power increase, significant fuel economy, especially at high speeds, streamlining exhaust flow. However, that can cause misfires by the spark plugs but at fault of the piston going slightly faster on the exhaust stroke. uk plus four of these: Exhaust Manifold Gasket to Cylinder Head at www. i broke most of the bolts to remove the manifolds and had no luck drilling them out. It also directs exhaust gases through the exhaust pipe, catalytic converter and muffler to exit at the back of the vehicle. If the wrong one was used when the intake was installed it causes an exhaust leak that you can feel by running your fingers along the head/intake joint (basically along the inboard side of your valve covers. When I start the engine I have a lot of "exhaust noise" at the engine but after a while it quiets down. 7 though) popped a head off the bolt on the manifold, drivers side rear. Posted 4/8/2020 06:55 (#8173023 - in reply to #8172992) Subject: RE: 8400 jd exhaust leak? I’d assume there’s a leak somewhere if it’s squealing. If you notice a ticking sound, that may point to an exhaust leak. The breakthrough was in understanding how pressure waves, or sound waves, travel along the exhaust pipe and can change the pressure in the system. (the wet parts under my car are WD-40 I sprayed earlier)This video is about me fixing my loose exhaust. If you suspect an exhaust leak, get your vehicle inspected by a mechanic as soon as possible. An unusual sound in the engine is another symptom of an exhaust manifold leak. They said they can't find a leak. Since a cracked exhaust manifold causes exhaust gases to leak, plastic and rubber parts around it could burn. testing, good primary boost (10 or 11), but once over 4500, boost drops to 2 > or 3 and there is a massive hissing sound. Don't put up with that ominous, unmistakable "tick, tick, tick" sound of an exhaust manifold leak. Sounds way better now! sounded like my engine was knocking bad. It sounds almost like a horrible exhaust leak. Truck is running great. Usually you can hear it coming from under the engine bay or the middle of the car, whereas with an exhaust system you typically hear it further back. Most gasoline passenger and light duty trucks on the road today utilize electronically controlled fuel injection. What does seem interesting is that the revised manifold discussed in T-SB-0010-12 was used as a running change to the MY 2011 vehicles. A leaking manifold is also dangerous for your engine, it can cause a burned exhaust valve, which will lead to other problems. Excessively noisy engine. Sounds like a leak at the exhaust manifold. 00 and I came with intake and exhaust manifold gasket. If your exhaust manifold is cracked you may experience a ticking sound, loss of power, or an exhaust smell coming from the engine bay. I had replaced my manifold 2 times and the gasket 4 different times and even had the so called upgrade done to help if from leaking. 0085 VCO, 3 piece manifold, SB 3250SDDC, Quad ADR, Air Dog II 165, aFe intake, aFe intake elbow, 4" XP MBRP exhaust, 265x75x16s. The failure and current mileage. The passenger and driver exhaust manifold bolts let go at roughly 70,000 miles and we had them replaced by the dealership under warranty. I have a leak at the exhaust manifold. On Friday they heard the exhaust leak. Leaks can also come from cracks in the manifold itself. More specifically, large engines like a big 6. Lower rear was easy. Basically I was loosing that whole cylinders exhaust gas. EGR outlet connection / gasket from the up pipe. An older-much older-vehicle with a carburetor will run lean. cant smell or see anything now. just my imput. The exhaust manifold is responsible for evacuating spent exhaust gasses from the combustion process through the exhaust and out the tail pipe. 7L Diesel engine may experience an exhaust leak due to broken exhaust manifold studs. Access is difficult. I hear no mechanical noises and no exhaust leaks at idle. I don’t have a recommendation for a Colt Rodeo – no idea. I have been experiencing the same noise. The first specific crankcase ventilation system was the road draft tube, which used a partial vacuum to draw the gases through a tube and release them to the atmosphere. I have read more then several owners who have had to replace it with an aftemarket manifold after removing the oem mani because the manifold holes and head studs were not even close to lining up anymore. Replace the manifold and you'll see faster spooling and probably an increase on your boost pressure depending on the size of the leak. Find FORD Exhaust Manifolds and get Free Shipping on Orders Over $99 at Summit Racing! Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Exhaust Manifold, Ford, Pickup, SUV, Van, 4. In this area, an exhaust leak will sound more like a ticking or puffing. After putting everything back together I have a exhaust leak at the passanger side manifold to exhaust. Check out these links for. Change the look and sound of your 2014-2019 GM 6. Exhaust leaks are mainly just annoying, but depending where it's leaking, it could be pouring exhaust into the cab which has obvious implications. There’s a sound similar to sticky lifters that can be caused by detonation in the exhaust manifold, either due to a seriously wrong air/fuel mixture problem, or a incontinent exhaust valve. Since a cracked exhaust manifold causes exhaust gases to leak, plastic and rubber parts around it could burn. 0 Mustang Tech: 0: Oct 3, 2011: Exhaust leak at. Hello Everyone. You can still draw unmetered air (vacuum) into the system at boost if there is a leak before the turbo inlet. drive it for about 5 minutes, cool it down and everything will be. The coolant can also come from many other sources: The radiator - The radiator usually sits right at the front of the engine and has a noticeable, screw lid. 0L V8 typically see about a 2%-3% horsepower increase. It may leak and allow the coolant to enter the intake port, the crank case, or it can drip down the side of engine on the outside. If it's coming from the side of the engine it's likely an exhaust leak at that particular manifold - possible at the collector. I had a leak on the collector manifold outlet to exhaust broke some bolts of course what a PITA that was but it seemed to sound better and idle and run a lot better. I have a exhaust leak on my passenger side rear of my manifold, it is making the gasket vibrate oudda control and makes a terrible, annoying sound when it is cold, after it warms up the metal expands I reckon and the sound goes away. Not for sale or use in the state of California. The increase in sound output from your exhaust system can actually lead to a ticket for excessively loud exhaust in some areas. Blue or gray exhaust smoke. Too much oxygen compared to the amount of fuel. RE: Exhaust Leak at Manifold IP: Logged Message: I found this site after learning yesterday I had one side bad, one side going bad, exhaust manifold leaks. A 'blown' exhaust gasket can be detected by excessive noise from the exhaust, and by white burn marks around the manifold flange. guzzle's 2002 Ford Powerstroke Diesel EBP Sensor and Tube Cleaning guzzle's web store offering repair o-rings, seals, fuel bowl and HPOP repair kits, many that are not offered by Ford or IH. This can be caused by the deterioration of the exhaust manifold gasket or a crack in the manifold. This WheelZine post undertakes an exhaust manifold vs. com can cost you from $9 to $1,300. This can be a difficult symptom to detect because it may be hard to hear the knocking sound over the regular noises of the car, especially while driving. Blue/gray exhaust smoke means there’s likely an oil leak and your engine is burning oil. If there's leakage at the joint between the engine and the exhaust manifold, you need a new exhaust manifold gasket -- the leakage could allow poisonous gasses into the passenger compartment, killling occupants. I'm going today to my mechanic to tighten up the exhaust manifold nuts, if that doesn't do it then I might have to consider changing the exhaust manifold gasket which I hear is a pain to. Hello, I recently replaced the head gasket on my 2001 s10. Once metal fatigue sets in, the force applied to keep flange surfaces mated becomes compromised leading to gases escaping and causing problems. You may be able to save a number of dollars by performing an exhaust leak repair yourself. View Details & Buy. Re: Ford V-10 Lifter Noise (Ticking) - 01/30/16 08:14 PM Today I was able to diagnose my v10 in greater depth. If you open the hood and just hit the gas in park does it make the noise you describe? Could it be a bearing going out on a pulley? Not ruling out a gasket failure or crack on the exhaust manifold thought, just a thought. From what I understand, swapping out the manifolds is a real PITA on 1st gens so I have simply ignored it for about 2 years (goes away when she warms up). What does seem interesting is that the revised manifold discussed in T-SB-0010-12 was used as a running change to the MY 2011 vehicles. Intake manifold leaks aren't extremely common, but they do happen. Ok so I just noticed this today I seem to have an exhaust manifold leak with the windows down at slow speeds you can hear a slight tick and after having my wife give it some gas while parked myself and a friend both listened to it and it doesn't sound like a valve or a rod or like the noisy V6 fuel injection anybody else have this problem and I looked for headers online and it seems nobody. Even 1990's rust heaps have a zillions problems but exhaust manifolds aren't one of them: 1. Fuel slobber will seep through those joints , even on new manifolds. Replace the exhaust manifold on the side with a broken stud. These are all indicators of an exhaust leak. After putting everything back together I have a exhaust leak at the passanger side manifold to exhaust. Some 2011 – 2014 Super Duty vehicles equipped with 6. 4 engines are commonly known for intake gasket leaks and the 3. but for the 2 days i drove it like that. There is so much heat right there at the exhaust manifold because of the small size of the stock turbo. The shutters help prevent water from running back into the engine under certain circumstances. Lots Of White Smoke Out of Exhaust Pipe. Sometimes an exhaust manifold starts to leak because a. A performance exhaust system will look and sound better over a more restrictive factory exhaust system. An exhaust manifold leak can cause burned exhaust valves, improper fuel trim as the leak introduces extra oxygen that is picked up by the oxygen sensor, and slow warm-up time which also causes high fuel consumption, which will also cause your catalytic converter to fail prematurely, and the exhaust fumes can easily enter the vehicle cabin through the heating system and cause the passengers to. Exhaust sounded fine no ticks like in a typical exhaust leak. Thats what im gonna do because i don't want anymore broken studs. Too much oxygen compared to the amount of fuel. This exhaust system features 4” aluminized steel that is mandrel bent for maximum flow and includes dual 304 stainless steel tips that polished to a brilliant shine. From emission components that cut pollution, to exhaust parts fit for a classic, Advance Auto Parts can assist with most all of your automotive needs. As the vehicle warms up, these leaks get louder. So you said it smells like exhaust, the sound at idle sounds like a 'pft, pft' sound and the sound while driving sounds like a ticking sound. Between the exhaust manifold and the cylinder head is your exhaust manifold gasket. The exhaust manifold is leaking and there is a small exhaust leak near the DPF. During the repair I unbolted the passenger side manifold to exhaust pipe to give more wiggle room. 1996 Ford 15-Passenger Van, automatic transmission, 460 CI motor, VIN # XXXXX Problem: The passenger side exhaust manifold is warped and leaking exhaust. It it hard to reach and will require an open ended tool for sure. -Leaking tubing or hoses. Exhaust manifolds are usually made of cast iron or stamped steel and are designed to collect exhaust gases from the engine cylinders and transport them into the exhaust pipes for expulsion. Average repair cost is $330 at 136,200 miles. Exhaust Leak. The manifold is attached to the cylinder head, and the unit is sealed with the use of a exhaust manifold gasket. EGR outlet connection / gasket from the up pipe. 1996 Ford 15-Passenger Van, automatic transmission, 460 CI motor, VIN # XXXXX Problem: The passenger side exhaust manifold is warped and leaking exhaust. I have what sounds like an exhaust leak but I see no soot at any of the joints or around the manifolds. Brian – Can’t imagine that 2mm would make such a big difference, but if that pipe included a new header, than all bets are off. When I finished the job and started the car, it sounded exactly as it did prior to the work. Re: Can an exhaust leak cause a lifter tick? « Reply #13 on: August 16, 2008, 22:22:26 » FWIW, a "regular" header leak DOES sound like a lifter tick. I've got what must be a slightly warped exhaust manifold on my 354 Hemi. Exhaust howling (Spooky-hoot) during turbo boost conditions. uk plus four of these: Exhaust Manifold Gasket to Cylinder Head at www. Double up some cardboard and stop up the exhaust with gloves on, if its leaking at the pipe you should here it and as T Q said if its a blown head gasket you should have a dead miss or that cylinder would be cooler to the touch and possibly be pumping some oil out also, good Luck and let us know what u find, Capital Jack. The sound is especially loud during a cold start or when you accelerate the vehicle. A leaking exhaust manifold gasket or cracked manifold can be. Is this common in the 4cyl as well? I also hear a tin type sound when I get on it. Cummins N14 3 piece Exhaust manifold, part # 3078322, 3078323, 3078324. It sounds like I have an exhaust leak when I step on the gas. I purchased a 2002 IS300 earlier this year and have recently started seeing smoke from under the hood after driving the vehicle and coming to a stop. Cast Iron Exhaust Manifold Repair Kit includes: 77 is a premium electrode that produces welds which are high strength, crack resistant, and porosity free when applied to a wide variety of cast irons. Anyway, I was wondering if you thought this really could be it, as I've had a friend tell me that happened with him, and if buying new bolts and sealing it would fix it. Cracked exhaust manifolds are just one of the potential issues you need to look for when buying a 4th generation Toyota 4runner. Once I noticed the leak, I inspected the engine to find the the manifold bolts closest to the fire wall are missing their heads. The individual pipes are cut and bent so that each one is the same length as the others. I don't think you'll hear of as many manifold problems with pickup-type trucks as van-type and motorhomes. Car: 1981 BMW. My 2015 sierra 6. 1L Vortec Cracked Exhaust manifold solution HEADERS? Apr 29 2015, 8:08pm Ok guys this is kind of a long story but please offer your advice i'm sure many of you dudes have been in the same boat with rusted manifold bolts. Some 2011 – 2014 Super Duty vehicles equipped with 6. The exhaust manifold or adapter or whatever is the large piece in the middle between the powerhead and the lower unit. Removing Broken Exhaust Manifold Bolts - Hemi Dodge Ram - Duration: 10:30. This photo shows the manifolds with the engine removed for clarity. The exhaust manifold close to the engine has probably broken. · White exhaust steam / smoke · Losing Coolant and engine running poorly, with No visible leaks. Cracked manifold or up pipe. 0L Engine Aupoko 917-107 Cylinder Head Leak Repair Clamp, Exhaust Manifold Repair Kit, Replace# 028218, 11518860, Fits for Chevy Silverado Suburban Tahoe GMC Sierra Yukon Escalade 4. An aftermarket exhaust allow your Cummins engine to breathe more efficiently leading to a drop in exhaust gas temperatures and a boost in horsepower and torque. If the leak is occurring in the manifold gasket or the manifold flange gasket area, excessive heat can build up which can quickly burn an exhaust valve, which will be. There is so much heat right there at the exhaust manifold because of the small size of the stock turbo. Cracked exhaust manifolds are just one of the potential issues you need to look for when buying a 4th generation Toyota 4runner. Can I do this job myself? I have done some co. Positive crankcase ventilation (PCV) systems— first used in the 1960s and present on most modern engines— send the crankcase gases back to the combustion chamber, in order. If you suspect an exhaust leak, get your vehicle inspected by a mechanic as soon as possible. I successfully did that. 00 and I came with intake and exhaust manifold gasket. This gasket must be able to withstand extreme heat and pressure. Get the ultimate performance exhaust systems, custom fit to your car, truck or motorcycle with same-day shipping on ALL in stock orders! MagnaFlow manufactures the best exhaust systems, mufflers, pipes and catalytic converters in the USA using premium components and the latest technology. Custom exhaust is a great addition to any set of performance upgrades you’ve made and will give you an edge over your competitors. #3: 27-46820. The exhaust gases are split by the manifold into 1,2,3 and 4,5,6 which means that the exhaust pulses are balanced by the firing order of 1,5,3,6,2,4--sequential pulses to opposite halves of the manifold. Admittedly, I can only see the tops of the manifolds, due to the OEM design. It doesn't take up a lot of space in the engine bay and does the job of getting the exhaust gas back to the exhaust pipes, but it doesn't do much for performance because all the exhaust pulses dump into the same space. The third time I had to replace the manifold I had enough. Valve lifters can certainly quieten down once an engine has been run for a while but an exhaust leak at the manifold can do the same thing. The most obvious (and annoying) problem of a broken exhaust is your car failing its MOT, and recent research shows that around 7% of MOT test failures are as a result of a faulty exhaust. An impack set on low is better than a hand ratchet. Access is difficult. You can hear a leaking exhaust manifold really well. I have used a stethoscope. If I were guessing, I'd say it's the valve cover, timing gear cover or governor. So you said it smells like exhaust, the sound at idle sounds like a 'pft, pft' sound and the sound while driving sounds like a ticking sound. This WheelZine post undertakes an exhaust manifold vs. Signs of an exhaust leak include a vibrating gas pedal, poor fuel mileage, loud noises, and potentially smelling exhaust fumes. the ford 460 is a real pain. 2L '98 models: reports of oil leaks at the front timing case cover, oil pan, rear intake manifold gasket. For those of you who haven't noticed or are stuck back in the 80's, a large number of the bikes coming from Milwaukee have fuel injection installed. 7L HEMI, where the header bolts to the block. The use of these terms is for identification and reference purposes only and does not imply that Pypes Performance Exhaust is affiliated, associated, sponsored, endorsed by, or in any other way, officially connected with the holders of these trademarks or copyrights. 0L Coyote Street Rod Cast Iron Exhaust Manifolds Compare Cast Iron Exhaust Manifolds, Street Rod, Ford, 5. Defining the acoustic profile and influencing the powerband — exhaust design is a more dynamic science than stringing together a few pipes and tacking on some mufflers. Kind of like a organ pipe. I purchased a 2002 IS300 earlier this year and have recently started seeing smoke from under the hood after driving the vehicle and coming to a stop. It is important to catch exhaust problems early because if the exhaust system goes unchecked, it can lead to engine problems since the exhaust system’s purpose is the removal of harmful elements from engines. Signs of exhaust manifold gasket failure. You can feel vibrations coming from the gas pedal or steering wheel. 71and back to the mancave for the assembly. First, I am seeing movement of the down pipe within the flange and SECOND I am feeling a leak between the flange. Brian – Can’t imagine that 2mm would make such a big difference, but if that pipe included a new header, than all bets are off. If there is a leak in the exhaust manifold it can cause the engine to run louder, sputter and run unevenly. I have seen your comments on not doing this. you might want to check your exhaust manifold gasket. :shock: This usually results from cheap, poorly designed pipes OR not getting the muffler pushed onto the pipe far enough before you tighten it. When I removed the manifold I was able to remove the busted stud with vise grips no problem. Why manifolds crack and leak. On the driver's side exhaust manifold, I noticed that the last bolt (towards the rear of the engine) is not there. Replace the exhaust manifold gaskets if the manifold is removed. It seems to go away after the engine is fully hot. Find FORD F-150 Exhaust Systems and get Free Shipping on Orders Over $99 at Summit Racing!. Signs of an exhaust leak include a vibrating gas pedal, poor fuel mileage, loud noises, and potentially smelling exhaust fumes. Exhaust manifold gaskets are mechanical seals that fit between the engine's cylinder head and the exhaust manifold. The exhaust manifolds will always have some noise to them. The oil separator is held onto the back of bank 1 (passenger side) with either 4 torx bolts or 4 external torx bolts. If there is a leak in the exhaust manifold it can cause the engine to run louder, sputter and run unevenly. It has a 4 to 2 exhaust manifold with 2 drop pipes that converge into collecter then to a single pipe to a muffler. Being that the manifold is bolted to the engine, and working with hot exhaust gasses, it experiences very severe heat cycling and can be prone to cracking with age. Average failure mileage is 84,000 miles. This leak > is in front of the passenger side and sounds like it is something big. Since this gasket is cooled and heated constantly, a crack is likely to form after a while. Having fun going through the new member of the Family. Truck is running great. 2004 Taurus 3. Intake manifold gaskets are responsible for sealing the intake manifold against the cylinder head(s). I think I hear an exhaust leak. I thought maybe the collector gasket was bad since from me messing with the exhaust manifold during the head gasket replacement. Wondering if I maybe the manifold gasket might leaking. The noise comes from exhaust gases leaking past the manifold gasket, and if it becomes bad enough, can lead to lowered engine performance and fuel economy. So, The source of this abnormal exhaust noise, is coming from between the exhaust manifold and the cylinder head. ive had some sort of noise coming from either my exhaust or a boost leak or something for a while and its making me crazy, i did have a leak where the dp connects to the catback but i have so much exhaust seal theres no way its still leaking, i also had a txs bov on for a while and thought it was leaking so i took it off and its not that either. i have never heard a pop or ping with an exhaust leak, altough im not an expert but it sounds like it might be in the engine. Before yesterday, my truck seemed to run nice and quiet, this is the first time I've heard it. Data signals from the oxygen sensors alert the PCM to lean exhaust oxygen content and also which bank of the engine is affected. Introducing oxygen to the exhaust at this point allows continued burning of the fuel mixture as it travels down the exhaust system and ultimately out the tailpipe. If the leak is occurring in the manifold gasket or the manifold flange gasket area, excessive heat can build up which can quickly burn an exhaust valve, which will be an expensive repair bill. I have exhaust leak and noise when depressed accelerator in the rear side of engine. This gasket must be able to withstand extreme heat and pressure. One of the bolts that hold the exhaust manifold in place has sheared off and now there is an annoying ticking sound. If your exhaust manifold is cracked you may experience a ticking sound, loss of power, or an exhaust smell coming from the engine bay. I have put in a new round (ceramic/steel) gasket and tightened the 3 nuts up tight. So we pressed on, no longer hearing the sound, and are now in West Colorado. I have been experiencing the same noise. $516 - $681: Exhaust Manifold Replacement. I got a broken stud in the head which sucks because i will need to buy that stud removal tool. 0 liter engine. Since a cracked exhaust manifold causes exhaust gases to leak, plastic and rubber parts around it could burn. Perhaps one of the most important leak-preventing devices used by the engine is the exhaust manifold gasket set. The exhaust system is typically connected to the exhaust manifold, which collects exhaust gases from the engine cylinders’ exhaust ports. Snapped exhaust manifold stud. Cracks may start out as small as a hairline crack, which may be noticeable when the vehicle is first started by the volume of noise it makes near the engine. An exhaust manifold of an internal combustion engine is the very first exhaust component bolted directly to the engine. Exhaust leaks are distinct and easily checked. Knock usually indicates a rod bearing going away. 00 and I came with intake and exhaust manifold gasket. Exhaust manifold bolts are rusting and breaking off leaving exhaust leak at the engine. Also, cold air could get in when it's turned off, and the cold air on hot exhaust valves could warp the valves. 0L, Coyote, Pair. Then to O'reillys I went new manifold $113. EGR outlet connection / gasket from the up pipe. I have what sounds like an exhaust leak but I see no soot at any of the joints or around the manifolds. Just had #8 injector replaced w/ glow plugs and seals, this was done to stop the miss from the injector. com can cost you from $9 to $1,300. Topic: Ford 460 manifold leak, what damage can occur? Posted By: Ductape Dave on 09/13/05 08:26pm I have a '97 F53 MH with a 460 engine, just came back from camping and heard a weird noise and after checking the exhaust manifold, found the rear stud broken off and a slight leak at that location. Come to think of it there was a spot on the aluminum manifold cover that was darkened pretty good. Improve the Look Whether you want to replace your Powerstroke’s full exhaust system or just make improvements one section at a time, Sinister Diesel has what you need. The exhaust manifold close to the engine has probably broken. 8 V6 Daily Driver 1963 Mercury Monterey 352 V8, 2 Barrel Holley Carburetor, Dual Exhaust *Current Project*. Has anyone experienced an issue where the exhaust leaked somewhere near the manifold, but not necessarily at the manifold. Exhaust manifold leak? So on the commute home last night, I notice the car is sounding like one of those kid cars (called rice rockets around here). 0 Mustang Tech: 0: Oct 3, 2011: Exhaust leak at. Toyota Sequoia, Tundra, 4Runner and Land Cruiser, Lexus GX470 and LX470 engine ticking/exhaust manifold leak CARspec had the opportunity to repair a nuisance issue for a Sequoia owner recently – a ticking noise out of the engine bay cause by a small crack in the driver’s side exhaust manifold. Car was inspected by a certified repair location in Ct. Access is difficult. This WheelZine post undertakes an exhaust manifold vs. The sound is especially bad during cold start ups. Any leak may allow exhaust gases into the cabin. Been to the dealer 3 times for it. 7L HEMI, where the header bolts to the block. The steering shaft intercepts the firewall right next to the DS exhaust manifold and creates a direct path for sound, at select frequencies (the tapping noise that sounds like a leak). Headers on the. Heavyd is right. just had and exhaust leak fixed. Sometimes when parked there is a chance you smell fumes from the breather from hot engine. The most obvious (and annoying) problem of a broken exhaust is your car failing its MOT, and recent research shows that around 7% of MOT test failures are as a result of a faulty exhaust. Dual plane intake with 2 2 brl carbs 37. ) Air Pressure Drops Quickly With Engine Stopped and Brakes Fully Applied-Leaking brake chamber, actuator, rotochamber or brake cylinder. Hard to locate, but it only makes noise after the car is drive at 2k+ RPM for a while. You might be leaking the oil out. What does seem interesting is that the revised manifold discussed in T-SB-0010-12 was used as a running change to the MY 2011 vehicles. Headers on the. Look for possible vacuum leaks by checking vacuum hose connections, the throttle body and manifold, and PVC valve and plumbing. (121 people reported this problem) RepairPal Fair Price Estimate. Inhaling exhaust fumes for an extensive amount of time is not good for you because they contain carbon monoxide. Backfiring or Sputtering Sounds From Tail Pipe. Make your voyage more enjoyable by decreasing engine room heat! If you are replacing exhaust lagging from a previous install or doing a complete repower, Heatshield Products has the right marine exhaust insulation for you. A little goes a long way: one container treats 8-10 typical V8 exhaust manifolds. 117k miles. if there is a small amount of exhaust coming from there then youll have a larger leak on boost. 1996 Ford 15-Passenger Van, automatic transmission, 460 CI motor, VIN # XXXXX Problem: The passenger side exhaust manifold is warped and leaking exhaust. Quick video to show how a bad exhaust gasket can sound from behind the wheel. The oil separator is held onto the back of bank 1 (passenger side) with either 4 torx bolts or 4 external torx bolts. The exhaust manifolds will always have some noise to them. I have a exhaust leak on my passenger side rear of my manifold, it is making the gasket vibrate oudda control and makes a terrible, annoying sound when it is cold, after it warms up the metal expands I reckon and the sound goes away. Leaks can also occur under the hood, where the exhaust manifold attaches to the engine at the upstream portion of the exhaust system. We can smell the exhaust inside the car. After you get all the smoke cleared up you can run your hand along the manifold (not touching it) and see if you feel any exhaust blowing out from there. This is a very common problem on the Detroit engines. the only company i have found for headers is. 00 Maybe my faith in Nissan is a little better but I'll remain skeptical. m 33 lb ft Transmission Filler Tube Bracket Nut 12. Broken Tail Pipe: The tail pipe comes out of the muffler and exhausts the gases and fumes into the air. 117k miles. Shop online today!. Decrease in power, acceleration, and fuel efficiency. I bent down to take a look an noticed two spots on the muffler where exhaust was coming out, almost in the middle/center of the muffler, well away from the exhaust pipes. Deepen the Sound. My old WK had cracked bolts in the exhaust manifold and the leaky sounds it made are similar to this. They said they can't find a leak. Jan 30, 2015 at 4:45 PM #5. In the past I have actually doubled up an exhaust manifold gasket to get them to stop leaking. also if you can hear it in the engine compartment its prob not the exhaust. Valve lifters can certainly quieten down once an engine has been run for a while but an exhaust leak at the manifold can do the same thing. Location #1 in the picture below is on the passenger side front of the engine. Leaks in a manifold are often cracks in the cast iron due to the intense temperatures of the engine. Sounds like a diesel engine. If a leak is found at the exhaust manifold, replace only the manifold gasket that is leaking(I think this should read INSTALL a gasket, since originally there are no gaskets at the manifolds). Re: 8n exhaust manifold leaking oil in reply to Bens n's, 06-03-2015 12:06:39 There are two chances of an oil leak at the manifold: slim & none. Mine was on the passenger side or right side just where the exhaust system bolts on to the manifold. Average repair cost is $330 at 136,200 miles. View large pictures of common coolant leak areas on the GM 3100 and 3400 V6 engine. A 'blown' exhaust gasket can be detected by excessive noise from the exhaust, and by white burn marks around the manifold flange. The exhaust manifold is an essential part of a vehicle's emissions control system. Location #2 is a little harder to see. Exhaust leaks are distinct and easily checked. 4 engines are commonly known for intake gasket leaks and the 3. sounds like an exhaust leak, but i dont think its an exhaust leak I know there are two different intake manifold gasket styles. A less likely scenario would be a cracked exhaust manifold tube, upon inspection you will. 4: Backfires in Exhaust Note: It is normal for many high performance exhaust systems to moderately backfire or pop when the throttle is closed from mid-to-high rpm. A leak in the exhaust manifold can burn the exhaust valves, which compromises their seals over the cylinders, and impacts the performance of the pistons, hence the engine. There are a couple of different answers based on the vehicle. I got it all put back together and fired it up and it sounded worse than before !!. Depending on the particular system, the fuel is fired into either the inlet manifold or the inlet port via an injector. Sometimes an exhaust manifold starts to leak because a mounting bolt or stud has broken. hmmm until this moment I didn't realize there was a difference ;) it doesn't matter, I've used specialty gaskets everything from copper to the special think aluminumish gaskets they all leak if you don't tighten them correctly (and keep tightening them) there is, however, a huge difference in cost. It doesn't take up a lot of space in the engine bay and does the job of getting the exhaust gas back to the exhaust pipes, but it doesn't do much for performance because all the exhaust pulses dump into the same space. Since May, I've installed 3 exhaust manifolds (all the same Dorman part) from AdvanceAuto, and all three of them have leaked after 1 week - 1 month whether it be from cracking or other problems. A faulty exhaust manifold gasket will produce an exhaust leak that will sound like a hissing or tapping sound coming from the engine. I'm having a problem with exhaust leaks on the left manifold. You can hear a leaking exhaust manifold really well. If anything, you would gain more power because the engine, or atleast that one cylinder, would breathe easier. However, I took it to a mechanic, and he said it's an exhaust leak. m 80 lb in Leaf Spring Bolt and Nut 85 N. The leak could be caused by several issues like leaking valve seals, damaged piston rings, or worn cylinder walls. Re: Header Gaskets vs. Here are the most common symptoms of an exhaust leak: Loud Rumbling Sound– As the exhaust leak escapes through holes in the exhaust, it will let out a deep rumble sound. View large pictures of common coolant leak areas on the GM 3100 and 3400 V6 engine. Headers on the. As the vehicle warms up, these leaks get louder. but for the 2 days i drove it like that. Discussion in ' Engine & Performance ' started by basslowend, Oct 16, 2017. On the 20th the service manager called to say they had broken 3 studs trying to disassemble the car. Most of the time the problem with an exhaust leak is that the exhaust manifold was warped from the leak itself. In fact, one should expect a well-tuned high performance engine to "pop" and "crackle" when the throttle is closed at high rpm. Here’s another great tip from Keith Waltower: when attaching the clamp that holds the exhaust pipe to the manifold, put a jack under the muffler and jack it up so that it is held in place against the manifold while you get the clamp in. Lou and Dawn continued on their shopping destinations around Pahrump. If one is different, that might indicate and exhaust leak. tightening the bolts on the rust can crack the manifold to fix it correctly u will need to replace the manifold gasket gm#12558275 bolts gm#11515757 stud gm#11609296 and also the manifold to exhaust pipe hardware hope. It is not the flapper valve noise, that is located in the back of the exhaust all the way at the rear and makes more a squeak sound, I had that replaced on my 15 and I have a 16 now. The sound is especially bad during cold start ups. Research and compare cars for sale at CarMax. Make your voyage more enjoyable by decreasing engine room heat! If you are replacing exhaust lagging from a previous install or doing a complete repower, Heatshield Products has the right marine exhaust insulation for you. First, I am seeing movement of the down pipe within the flange and SECOND I am feeling a leak between the flange. Exhaust manifolds last forever, don't they? Even if they do fail, it isn't a major problem, right? These are common reactions when people are asked about their boat's manifold. The intake for the interior air con or fans is usually behind the engine with the air intake being just below the windscreen so fumes into the engine bay will be sucked into the car. m 89 lb in Exhaust Muffler Heat Shield 9 N. The sound was most noticeable at low rpms. This will cause a noisy engine problem to occur as the exhaust fumes escape through the gasket. Simply Finding Exhaust Leaks - Manifold Leak /Flipping A Silverado Episode 10 - Duration: 4:27. The exhaust manifold close to the engine has probably broken. The modern manifold, while still devoid of moving parts, is equipped with temperature, pressure, and oxygen sensors, along with branch connections to feed emissions control devices such as an exhaust gas recirculation valve (EGR). The basic job of the exhaust manifold is to take the gases from each cylinder and send them to the exhaust pipe. Dodge Ram HEMI Exhaust Manifold Leak - How it Sounds. I also see that there are two washers on the bolt- probably someone's previous attempt to tighten the bolt. 0L Engines. I have a leak at the exhaust manifold gasket (manifold to block). Instead of a common manifold that all of the cylinders share, each cylinder gets its own exhaust pipe. Had that recently (2011 1500, 120k miles), diagnosed as some broken exhaust manifold bolts that had to be replaced. It sounds almost like a horrible exhaust leak. it might be the turbo, but if so its a new sound. Most the older techs that do diag work cant hear it but every time I have a younger guy go on a test drive they hear it right away. Now wrencher says the sound that I hear (sounds like and exhaust leak or valve on a gas rig) is from needing a new downpipe and a turbo. Decreased MPGs. Exhaust Manifold Gaskets. Positive crankcase ventilation (PCV) systems— first used in the 1960s and present on most modern engines— send the crankcase gases back to the combustion chamber, in order. Signs of exhaust manifold gasket failure. when my manifolds leaked it was very hard to hear from the engin compartment but when u got along side or. If the leak is occurring in the manifold gasket or the manifold flange gasket area, excessive heat can build up which can quickly burn an exhaust valve, which will be an expensive repair bill. Remove the exhaust manifold and gasket, from the left or right side depending on which manifold is being replaced. The contact owns a 2007 Chevrolet Equinox. I have a leak at the exhaust manifold gasket (manifold to block). Plus, browse a wide selection of car air filters, oil filters, fuel filters, carburetor parts, nitrous oxide. When the tech performs a wet test, the compression reading on this cylinder has 75% of the specified reading. As you can imagine, exhaust manifolds are subject to intense heat. Furthermore. Just had #8 injector replaced w/ glow plugs and seals, this was done to stop the miss from the injector. Inhaling exhaust fumes for an extensive amount of time is not good for you because they contain carbon monoxide. If it's coming from the side of the engine it's likely an exhaust leak at that particular manifold - possible at the collector. 8L V10---On start up a slight tap sound, almost like a cranky lifter, but it is an exhaust manifold leak. I have noticed what sounds like an intermittent exhaust leak under the hood. Marine Exhaust Lagging Wrap, Jackets, and Heat Shields. The gasket prevents noxious gases and incredibly high temperatures from escaping the engine at the wrong point. Saw no evidence when I inspected, probably about 70-90 miles after I first heard the new sound. Decreased MPGs. They’re also subjected to considerable expansion and contraction as they heat up and cool back down. Exhaust exhaust manifold leak: 1974 - 1978 Mustang II Talk & Tech: 54: Sep 2, 2019: C: Exhaust Rattle coming from manifold: SN95 V6 Mustang Tech: 0: Apr 26, 2019: M: Exhaust Manifold To Downpipe Leak: 1996 - 2004 SN95 Mustang -General/Talk-5: Dec 2, 2017: R: exhaust leak at manifold: Fox 5. As you can imagine, exhaust manifolds are subject to intense heat. A burnt smell coming from the engine. 5 Lift, Fox Shocks, Fabtech HD Tie rods, 20x9 Fuel Lethal. Here are the most common symptoms of an exhaust leak: Loud Rumbling Sound– As the exhaust leak escapes through holes in the exhaust, it will let out a deep rumble sound. 917-107 Exhaust Manifold Clamp Exhaust Manifold Repair Kit To Cylinder Head Leak Repair Clamp Fits Front Right or Rear Left On 4. Knock usually indicates a rod bearing going away. Thats what im gonna do because i don't want anymore broken studs. Broken Tail Pipe: The tail pipe comes out of the muffler and exhausts the gases and fumes into the air. Notes: Manifold converter. 0 liter engine. Another pop-like sound that can come from the engine area involves your belts. Exhaust leak. As the connection heats up, expands, it seals off apparently - hence the classic disappearing of the noise in short order. Discussion in ' Engine & Performance ' started by basslowend, Oct 16, 2017. This is frustrating. i am a ford tech and from what i have seen the most likly cause is the exhaust manifold gasket is leaking. A leak in the exhaust manifold or its gasket can allow exhaust gases to escape, which poses a health hazard to the car’s occupants and can result in erroneous readings by the oxygen sensor. 00 Maybe my faith in Nissan is a little better but I'll remain skeptical. I had all of the pipes check for leaks today including the manifold. after the engine runs a minute the sound is just about gone, and when the truck is hot the sound is not there at all. When first driving the car (cold start), the sound seems to include what I can only describe (for a lack of better terms) as an exhaust leak, as if there was a exhaust manifold problem or a muffler can problem. If you had an internal engine problem, then it would be hard to pinpoint the location of the noise because the whole engine block will radiate it in all directions. Exhaust howling (Spooky-hoot) during turbo boost conditions. A leaking manifold is also dangerous for your engine, it can cause a burned exhaust valve, which will lead to other problems. actions · 2017-Jul-30 9:49 am · (locked) frank92:. As the turbocharged aircraft climbs, however, the pilot (or automated system) can close the wastegate, forcing more exhaust gas through the turbocharger turbine, thereby maintaining manifold pressure during the climb, at least until the critical pressure altitude is reached (when the wastegate is fully closed), after which manifold pressure falls. With the under engine bottom plate off and starting the engine cold I could get a hand up there to feel the exhaust blowing in my hand just a bit without it getting to hot. connected to the engine exhaust manifold, using VETUS exhaust hose (see page 77). 00 and I came with intake and exhaust manifold gasket. On the driver's side exhaust manifold, I noticed that the last bolt (towards the rear of the engine) is not there. Look for possible vacuum leaks by checking vacuum hose connections, the throttle body and manifold, and PVC valve and plumbing. Access is difficult. A higher pitched kind of knock can be piston slap when cold but it usually happens on multiple cylinders so it isn't a discrete sound. Discussion Starter • #1 • May 23, 2011. I have a cracked passenger manifold, video of how it sounds. 117k miles. If there is a hole in between your combustion chamber and the cooling jacket in your head gasket, each time the piston pushes exhaust gas out of the combustion chamber into the exhaust system some exhaust gas will also be. The sound is timed with the compression stroke on that cylinder. i had a hissing sound on mine also, my boost would only get as high as 20 psi and would hiss like crazy. If it's an exhaust leak you know you can just Saw-Zall the muffler off, then you won't have to worry about the exhaust leak anymore if it is one From the audio I cannot tell if it is an exhaust leak. Car started coming apart on the 18th. I have a 2001 F-150, 5. This can be a difficult symptom to detect because it may be hard to hear the knocking sound over the regular noises of the car, especially while driving. Has an exhaust type smell. Knock usually indicates a rod bearing going away. New parts have been released to service this condition. Since May, I've installed 3 exhaust manifolds (all the same Dorman part) from AdvanceAuto, and all three of them have leaked after 1 week - 1 month whether it be from cracking or other problems. You can still draw unmetered air (vacuum) into the system at boost if there is a leak before the turbo inlet. Stop driving the car and check that the plugs are torqued to 13lb/ft with a cold engine. OE exhaust manifold replacements on CarParts. Remove the exhaust manifold heat shields and inspect all of the bolt heads. Being that it comes and goes I have been looking closer at the EGR system wondering if it is coming from there but have not came up with much. I looked a little closer today and I noticed that two of the bolt heads on the back of the driver's side exhaust manifold are gone and the last one on the passanger's side is gone. I took my shower and checked email. Same problem on my 2002 Dakota v8 4. I have been under the car and a mechanic just checked what he could without a lift and didn't find any leaks. put it back together and i still hear a high pitched whine. Exhaust manifolds are frequently formed of cast iron in a block-like configuration. A leak between the exhaust manifold and head is sure close enough, and maybe the outlet of the manifold if it's compact. Check all vacuum links for cracks, holes, brittleness and expansion and replace if necessary. Alldata says it's a 3. Cracked exhaust manifolds are just one of the potential issues you need to look for when buying a 4th generation Toyota 4runner. The exhaust manifold is bolted directly to your car’s engine block and is the head section of the exhaust system. Common Questions What Will the Exhaust Leak Sound Like? The sound is described as a loud ticking that goes away after the engine is warmed (5-10 minutes). Since the exhaust is being compressed, and there is no fuel being applied, the engine slows down the vehicle. :shock: This usually results from cheap, poorly designed pipes OR not getting the muffler pushed onto the pipe far enough before you tighten it. The intake for the interior air con or fans is usually behind the engine with the air intake being just below the windscreen so fumes into the engine bay will be sucked into the car.