Questions tagged [exhaust]

Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds

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Is it normal to attach a catalytic converter with U-bolts?

I need to replace my catalytic converter. The current one is held in place by U-bolts. Two U-bolts between the cat and the manifold exhaust pipe (looks like a patch). One holding the exhaust pipe to ...
Trevor's user avatar
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4 votes
1 answer
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What could be causing a distinct exhaust drone in a tight band around 3250 rpms on a 2004 Subaru WRX?

EDIT: Additional information provided by LovelyWife(TM) - listening outside the car, she has proclaimed that the rattle / buzz / drone / resonance is coming from the front of the car and sounds like ...
Bob Cross's user avatar
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Is it possible for an oxygen sensor spacer to cause a car to stall?

VW CC 2010 2.0L CBFA I installed an O2 sensor spacer on my downstream O2 sensor and it seemed to be working for a day. One day later, after the car had cooled down it would rough idle and stall when i ...
Salvador Martinez's user avatar
4 votes
1 answer
144 views

Complete exhaust system replacement necessary?

The car in question is a 2000 Acura TL, dual exhaust system. One exhaust pipe of the dual system snapped off and is hanging down low. I took the car in to two different mechanics, they both said ...
Roger Starnley's user avatar
4 votes
2 answers
22k views

Is there any risk in driving without a tail pipe?

The tailpipe of my 1988 Toyota pickup truck was rusted and it broke off of the muffler (the muffler itself is fine), so now the exhaust leaves out of a pipe that is near the rear axle and underneath ...
yorble's user avatar
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4 votes
2 answers
187 views

Trying to fasten a steel tube to an exhaust manifold

Does anyone have experience trying to fasten/connect a small diameter steel tube to a cast iron exhaust manifold? I'm working on a 1979 Ford F-100 with a 300 CID/4.9L inline 6 engine. Part of the ...
wdon's user avatar
  • 41
4 votes
1 answer
1k views

Biodiesel and DPF (Diesel Particulate Filter)

I read a little about DPFs and biodiesel. Some claim that there's a reduction in lubricity and/or viscosity of engine oil when using B30 or above. They warn about increased engine wear because of it. ...
Reed's user avatar
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4 votes
2 answers
697 views

How to make an exhaust pipe thicker?

Long story short: my exhaust pipe snapped into 2 pieces right next to a flange connecting it to an upstream piece. Since it's too close to the flange, I cut the flange off and inserted a piece of pipe ...
tlhIngan's user avatar
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4 votes
1 answer
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Does water around a gasket imply an exhaust leak

Earlier, I asked this question: Could this be the source of an exhaust leak. I found a crack in the manifold, but in addition to that, when I started the car after it hasn't been started in a while, I ...
method's user avatar
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4 votes
0 answers
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Mercedes veto Exhaust

Just got a new exhaust fitted, the part that goes from the front wheel area all the way to the back. And NOW there is a smell of exhaust fumes in the veacle, that seams to be coming from the vents. ...
Deano's user avatar
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3 votes
7 answers
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How to determine by ear which part of exhaust needs replacing?

I have a 1.3L Skoda Felicia, (carburetter engine without catalytic nor other gimmicks). Since past 1-2 months I would hear the exhaust sound has changed, it became more and more audible and at full ...
Kromster's user avatar
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3 votes
1 answer
744 views

2004 Taurus - Help Identifying the leaking component

I was changing the oil on my 2004 Ford Taurus and I noticed this fairly aggressive leak. Can someone please help me identify this component and identify this leak? Any suggestions on correction?
Nick's user avatar
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3 votes
3 answers
16k views

Rattle on Ford Focus, suspect heat shield

Ford Focus 1.8 Ghia '99 V A little while ago a large section of the aluminium heat shield above my exhaust came loose. Being in a situation where I needed to keep going and without tools, I crawled ...
shanethehat's user avatar
3 votes
4 answers
410 views

Why do worn diesels emit black smoke?

I have often noticed that on the road, whenever a heavy diesel accelerates, it emits a huge cloud of black smoke. If this happens in front of me, I put the air recirculation mode on. This typically ...
juhist's user avatar
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3 votes
3 answers
10k views

heavy soot buildup in a new car on tailpipe

I have a new Hyundai Accent, just broke 5000 miles. It is now spitting black watery soot out the tail pipe. inside of the tail pipe is """"CAKED!" with black soot. {I have a plymouth neon with 250,000 ...
r griffin's user avatar
3 votes
2 answers
1k views

How do I check the exhaust system for damage after being rear ended at about 5mph?

After my last question, where I was rear-ended at about 5mph, I was told to check my exhaust system for damage. However I know nothing about to look out for. What should I look out for? What common ...
George's user avatar
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3 votes
2 answers
121 views

I just found out that my muffler wasn't even connected. I was driving it around lots is that bad?

I have an 1991 Ford Explorer. I just found out my muffler wasn't connected. I was wondering why it was so loud when I got it. I have been driving it for a month now and I'm hoping I didn't wreck ...
OneColdNortherner's user avatar
3 votes
1 answer
528 views

Exhaust smell emanating from old car?

I drive an '97 Subaru Legacy. Far as I know, it still works perfectly. Lately, there's been a bad exhaust smell around the car when I park and get out. I can smell it inside the car on occasion, but ...
temporary_user_name's user avatar
3 votes
1 answer
2k views

What's the purpose of the cover on the catalytic converter?

On my 1990 Honda, it's falling apart. I'd like to just rip it off; will that cause any problems? More specifically: will the car pass New York state inspection with a missing cover?
Mike Baranczak's user avatar
3 votes
1 answer
424 views

Could this be the source of an exhaust leak

I originnaly thought my exhaust leak in my 93' miata was from the exhaust manifold headers as there was some soot on the heat shield but after removing it and looking at the down pipe I see this piece ...
method's user avatar
  • 2,760
3 votes
1 answer
823 views

"Minor" Rear-end Collision on Audi A4 (B6), Exhaust Damage

My friend has borrowed my car for a few months (2004 A4 Audi V6), yesterday she told me that her other friend rear-ended her "very lightly", after which the car exhaust started making a weird noise. ...
Alexander Tsepkov's user avatar
3 votes
1 answer
1k views

Motorcycle muffler is stuck

Trying to get my muffler off of my Yamaha L5T but am having no luck. Any tips or tricks to getting this off?
ahendren's user avatar
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3 votes
1 answer
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Changing the exhaust on a motorbike

I have a Yamaha XJ6 from 2012 and I would like to change the exhaust. But I have a choice. Do I change only the muffler or the whole "line"? Other than cost what are the pros and cons of changing ...
HappyDump's user avatar
  • 133
3 votes
1 answer
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White smoke from tail pipe on operating temp start

I have a 89 Buick Century Custom. On the first start of the day, I have no problem. No smoke and no difficulty starting. However, after the car warms up, say, after driving to a gas station the ...
KiloJKilo's user avatar
  • 131
3 votes
3 answers
2k views

Why does the price of Catalytic Converters vary so much?

My check engine light came on and the diagnostic code says it is a problem with the catalytic converters so I'm getting ready to schedule an appointment with a mechanic to take care of that. The ...
JohnFx's user avatar
  • 768
3 votes
3 answers
11k views

Diagnosing rattling noise whilst car under acceleration

I have a 2008MY Fiat Grande Punto (6 speed manual transmission), which has developed what I would describe as a rattling noise during acceleration. A few observations I have made: The noise sounds ...
james246's user avatar
  • 215
3 votes
3 answers
3k views

How to remove broken bolt with screw extractor from exhaust manifold

Okay folks, so I have here an exhaust manifold from a 1989 Volvo 240. I was able to disconnect it from the downpipe without breaking all but a single bolt. I snapped about a quarter inch from the ...
wheeler's user avatar
  • 131
3 votes
1 answer
205 views

Exhaust smells coming from ventilation system

The inside of my Suzuki Alto smells like exhaust/gas/oil. The smells seem to be coming through the ventilation system when the fan is blowing. What could cause these conditions?
Sns Murthy's user avatar
3 votes
1 answer
2k views

What causes the "pop" and "burble" noises on overrun?

I love the sound, just wondering what causes it.
purpleACR's user avatar
  • 707
3 votes
1 answer
252 views

How should I diagnose an exhaust "howl" when descending through 3200 rpms?

As mentioned previously, I have a 2004 WRX wagon with a stainless Prodrive circular-tip axle-back installed around 2006. Lately, the weather has been nice enough to drive with the windows open and I'...
Bob Cross's user avatar
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3 votes
2 answers
161 views

Painting exhaust on motorcycle

I recently purchase an 07 Honda shadow spirit and it has chrome exhaust, could anyone tell me how I could paint them black, thank you
Chris Parmer's user avatar
3 votes
2 answers
3k views

Exhaust Manifold Nuts won't screw in all the way

after installing the new headers on my car I am having an issue with the bolts not going in all the way in both from the cat end and the block end and I am afraid of snapping them from using too much ...
method's user avatar
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3 votes
1 answer
601 views

Do I have to use clamps or does the sealant do the same thing...I need help

I have to put my muffler pipe in but I'm kinda confused...can I put the pipe on and use the sealant would that be alright to do or do you have to use clamps ?
Chris's user avatar
  • 31
3 votes
2 answers
250 views

Kawasaki ZR -7S has soot in exhaust system

There is soot in the exhaust of my Kawasaki ZR-7S. All four spark plugs are coated with soot. When we first got it started, the engine ran on only 2 or 3 cylinders. We adjusted the carbs and now it ...
Peter Christensen's user avatar
3 votes
2 answers
415 views

1999 Ford Ranger Exhaust Repair

I have a 1999 Ford Ranger with a 3L 6v flex fuel 2 door extended cab with a 6 ft bed. I need to replace the entire exhaust, however I cannot find a Y-pipe for the catalytic converter. All the parts ...
fftk4323's user avatar
3 votes
2 answers
2k views

MINI Cooper Oil Leak

I bought a 2007 MINI Cooper 8/27/14. On 9/9, as I drove to work, I noticed smoke coming from the back & front of the car. When I drove home late that night, the car was not smoking. After that ...
skatblueeyes's user avatar
3 votes
2 answers
3k views

Improve engine sound of Mazda RX-8

I would like my 2006 Mazda RX-8 Shinka to be a little louder. I just don't know where to start though. The engine has such a nice sound, but I can't really hear it. I don't want it to be so loud that ...
Jasmine's user avatar
  • 274
3 votes
2 answers
547 views

Muffler inlet corrosion problem

My 2001 Honda Civic needs a new muffler every two (2) years or so, because the inlet pipe corrodes just after the union. Is this a common problem, or would installing a better quality muffler prevent ...
Tester101's user avatar
  • 839
3 votes
1 answer
264 views

Replaced my 5 cylinder Volvo V70 2.5l turbo engine with a 6 cylinder S80 2.9l twin turbo engine and I'm having trouble with the exhaust

Replaced my 5 cylinder Volvo V70 2.5l turbo engine with a 6 cylinder S80 2.9l twin turbo engine and I'm having trouble with what to do about the exhaust. The original 5 cylinder had only 1 turbo, 1 ...
Adam Dahlvang's user avatar
3 votes
3 answers
8k views

Can Exhaust leaks be repaired by welding?

I have some small leaks(few mm) in my manifold and down pipe. As mine is a rare US manufactured car(civic vti 99) and I'm in uk, mechanic said it will be quite difficult to find the part. I aksed ...
James Wilson's user avatar
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3 votes
1 answer
4k views

Can I spray paint a engine's heat shield?

While planning some tasks for "restoring" my engine bay, I noticed one of the things that significantly affect the way it looks is the heat shield. It's rusty, since the corrosion was probably much ...
IanC's user avatar
  • 386
3 votes
2 answers
30k views

Exhaust leak despite tightening the flange all the way

I replaced the catalytic converter on my 93 Miata with a test pipe. The issue is there is an exhaust leak that I can't seem to fix. I tightened the flange all the way around and it still leaks. It ...
method's user avatar
  • 2,760
3 votes
1 answer
614 views

Mini Cooper 1.6 Diesel Carbon Coming From The Exhaust

I have just recently bought the car and have noticed that the car kicks out black smoke when I am driving, this only happens once or twice, but there is a lot of carbon inside the exhaust and also the ...
Jonny donald's user avatar
3 votes
2 answers
19k views

Welding, Repair, or Patch Catalytic Converter Crack

I got rear ended and the exhaust pipe was mashed forward causing the crack in my Catalytic converter's weld. Or perhaps, it just worsened the crack if it was too small to notice before. The crack does ...
justinm410's user avatar
  • 1,722
3 votes
1 answer
99 views

After perfoming tune up to my jetta 2.0

After performing tune up to the car due to misfiring replacing spark pugs new wires new gas filter When finished and started the car a lot of water came out of the exhaust like never saw it before. ...
Arturo Abrams's user avatar
3 votes
1 answer
436 views

what is the exhaust pressure of bajaj pulsar 220cc engine 2014 model?

What is the exhaust pressure of Bajaj Pulsar 220cc engine 2014 model? What is the normal idling rpm of Bajaj Pulsar 220cc? Can a turbocharger be installed on this bike?
Ajesh Ravindranath's user avatar
3 votes
1 answer
160 views

Is a chuffing sound from a 1999 Saab 9-3 sign of an exhaust leak?

I hear this sound when running alongside curbs or concrete walls with RPMs below 2000. I suspect it's a leaking exhaust manifold gasket, and intend to replace this in the near future. When I try to ...
Mannya's user avatar
  • 31
3 votes
1 answer
2k views

Mechanic Troubles And A Small Watery Oil Leak

My car is a 2005 BMW 525i E60 with about 180,000km on the clock. It has been well looked after and serviced. I don't get dealer services, but go to a mechanic who has always been good and uses the ...
Dwayne Charrington's user avatar
3 votes
1 answer
1k views

Are there any alternatives to the OEM muffler for a Volvo XC90?

I've been looking for an alternative to the OEM muffler for a Volvo XC90 2.5T AWD. There are a number of other Volvo vehicles that use the same drivetrain, but not one of the national muffler shops ...
chris's user avatar
  • 2,588
3 votes
1 answer
37 views

2000 Camaro headers/Borla

Just bought 2000 Camaro stock and looking to add headers and Borla exhaust. Thinking BBK long tube headers and a Borla exhaust. Has anyone done that? Any recommendations? Any other suggestions ...
Mike29's user avatar
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