Questions tagged [exhaust]

Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds

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0answers
341 views

Motorcycle exhaust can size

How does the length of the exhaust 'can' affect the noise level and engine response of a motorcycle. A number of articles mention how the pipework diameter affects response but I can't find much on ...
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1answer
98 views

Is it norml for smoke to come out of exhaust?

Hi got out of my car while the engine was still running and noticed smoke kept leaving the exhaust. I wondered of this was normal as I dont see this site with most cars. I also noticed a vacuum ...
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0answers
92 views

1983 22R Randomly started sounding like a chopped harley

5 second videos, this is what it sounded like: Yesterday: http://youtu.be/_2Nl0bR1QOA and Today: http://youtu.be/zP4_cT8yaH4 It sounds like this regardless of engine temp Started randomly It's ...
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1answer
4k views

How can I re-attach rear muffler pipe to muffler body

2004 Impreza Subaru Outback Sport (2.5L SOHC) The rear pipe of my muffler has broken away from from its weld to the muffler body. I would just replace the whole muffler assembly, but the joint where ...
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2answers
4k views

Will my exhaust pipe melt nearby plastic or PVC?

I am converting a van into a tiny home and want to mount my greywater tank in the undercarriage behind the rear axle. I'm worried about radiant heat from the exhaust pipe melting a plastic water tank ...
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2answers
10k views

How does condensed water get sent out of an exhaust system?

We've all seen water dribbling out a car exhaust when we're following someone accelerating out of a stoplight. I know that the water is an inevitable product of combustion, but I find myself wondering ...
3
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2answers
15k 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 ...
9
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1answer
401 views

Aftermarket Exhaust

I have a Volvo c30 D5(2007) and my exhaust has started to rot through from the inside, I obtained several quotes from various part providers and they all said an after market exhaust would be allot ...
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3answers
8k 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 ...
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2answers
2k 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 ...
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3answers
7k views

What's the purpose of having the cat right after the exhaust manifold

In a lot of the cheap cars I have looked at their exhaust components, I always find the catalytic converter right after the exhaust manifold instead of being after the down/front pipe in a "typical" ...
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2answers
324 views

Cobalt problems

I have an 06 cobalt 2.2. The po420 code came on a couple days ago. The cat and both sensors were replaced about 3 months ago by a licensed exhaust specialist/mechanic. What else could be the problem?
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1answer
2k views

Different pipe pressure on motorcycle exhaust

I've looked everywhere for an answer, but without success. My problem is this: When my v-twin, twin-exhaust motorcycle is at idle, there is a significant difference in the pressure experienced by a ...
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1answer
2k views

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 ...
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1answer
333 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 ...
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5answers
12k views

How to fix broken exhaust pipe?

I was driving down the highway and I heard a bang, a beep, and then constant scraping. I pulled to the side of a road under a bridge and looked under my car, to see this: From what I can understand, ...
4
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1answer
121 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 ...
3
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1answer
739 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. ...
3
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1answer
272 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 ?
2
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1answer
168 views

Exhaust fumes visible in car

I recently bought a diesel Jaguar S-Type. It was fine until 2 days ago when I could smell exhaust fumes in the car. Today, when out driving, I could see the fumes in the car. What could be causing ...
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1answer
4k views

Water like drop coming out of the exhaust of the car stops? [duplicate]

Earlier, water like drops come out of the exhaust of my car. I searched web, and it shows that its a good sign. But for last few months after a regular maintenance cycle (Oil, Oil Filter, Air Filter, ...
3
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2answers
176 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 ...
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0answers
38 views

2005 Ford Explorer Sport Trac Exhaust System

Would I be able to fit a Spintech Pro Street 9000 series onto my 2005 Ford Explorer Sport Trac? And if so, what else would I need besides the muffler itself?
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1answer
2k views

Resonance Chambers on Four Stroke

I've seen some full exhaust system which came with a resonance chamber on header pipe for four-stroke motorcycles, this header is shorter than the original one As you can see the original one has a ...
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0answers
33 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 ...
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2answers
3k views

Can (possible) exhaust system damage cause random misfires?

2001 Honda Prelude SH. About three weeks ago while travelling 10-15 mph I pulled off the side of a dirt road to park and it turns out there was a row of a few railroad ties laying in the grass there....
2
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1answer
817 views

Does an H-pipe improve exhaust flow?

I am planning an exhaust build on a Nissan Titan. With the Flowmaster dual exhaust setup I had there was an H-pipe about 1 foot in front of the muffler. I've been told the H-pipe helps the sound of ...
9
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1answer
637 views

What effect will replacing manifolds with headers have on oil temperature?

I drive a big heavy car (2011 Mercedes E63, somewhere around 4200lbs) that I take to the track. It has the NA 6.3L engine (M156) with no modifications. I struggle with oil temperature issues on hot ...
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1answer
156 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?
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1answer
816 views

What options do I have for installing an O2 sensor in a cast iron exhaust manifold?

I need to place an O2 sensor in my exhaust manifold. My exhaust manifold is cast iron and I cannot weld a bung on to it. I've also looked around and the shops around me aren't able to weld onto cast ...
2
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0answers
110 views

Fixed exhaust leak, running hotter now

Yeah, it's the Solstice again. I just replaced a v-band clamp between my turbo and the cat. The engine runs a lot smoother now - go figure - but it's running quite a bit warmer. Before I recently ...
4
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2answers
16k 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 ...
4
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2answers
624 views

Help me understand catalytic converters and exhaust restriction

Let's imagine a theoretical car that uses 2.25" exhaust piping all of the way back from the motor to tailpipe. How much power loss would there be by installing a catalytic converter in there with a 2" ...
4
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3answers
31k views

Thick white (maybe blue) smoke from tailpipe while accelerating, then the smoke stopped and car runs normally

First, sorry if this is a duplicate. I searched for similar symptoms on this site and found no other issues where the problem went away on its own. Yesterday after five minutes of neighborhood ...
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3answers
2k views

Best diameter for exhaust valve opening for sound/performance

The story: I have a turbocharged 2l engine in my car, and a 3" straight through exhaust, that is very very loud and drones. So, I bought a cable operated inline butterfly valve, that can be opened ...
4
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4answers
185k views

Excessive water dripping from exhaust

This question is similar: What does a water like drop coming out of the exhaust of the car signify? But it sounds like the water should be in small amounts, and only when the car has not been driving ...
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0answers
150 views

Decreased MPG, clicking sound when pressing accelerator

Over the past week, the MPG on my car has gone down significantly, about 3-4 MPG. My driving habits have not changed. In the meantime, there is a distinct "pneumatic" clicking sound whenever I press ...
6
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5answers
2k views

How much room do I need to avoid carbon monoxide poisoning?

I'm driving an 04' Subaru Forester, and it needs some cleaning on the inside. I'm in my apartments underground parking garage, and I'm wondering, am I safe to idle the car (for the AC, lights on ...
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1answer
443 views

What is the muffler? How does it work?

After my previous question, lots of people said that having pipes coming through the bonnet/under the car etc would bypass the muffler. What is the muffler though? How does it work? People said ...
32
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7answers
11k views

What is the point of the exhaust?

I was thinking today, what is the actual point of an exhaust? Why can't we just have a pipe going out the front of a car instead of taking all the gases to the back of the car? I can only see ...
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1answer
426 views

Is an exhaust mute bad for 2 stroke engines? [closed]

Will an exhaust baffle have any bad effects on a 2 stroke engine if it's used all of the time?
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0answers
38 views

Nil HydroCarbon in the exaust

If hydrocarbons (HC) are nil and Carbon Monoxide (CO) is 0.33% and Carbon Dioxide (CO2) is 14% Why does the HC show up as nil? Is there a problem with having no HC readings?
4
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1answer
117 views

08 Silverado 5.3 cold start exhaust smoke and engine stall

For some time now I've been getting a considerable amount of dark smoke from my tailpipe on cold starts which I believe to be an oil burning issue. I have an oil consumption test in progress, so far ...
4
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2answers
128 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 ...
1
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1answer
3k views

Hard vibration when idle under 1000 rpm

I have an Honda S2000 2002,137000km. Yesterday, while running on the Track I lost the two spring bolts on the header/tespipe... so the car started shaking badling and caused my aem v2 intake to loose ...
7
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1answer
925 views

Locating the O2 sensors and the cat along the exhaust

I gather that the upstream O2 sensor is the one right in the center of this picture. I also gather that the catalytic converter (the "cat") is the bulbous part of the exhaust right behind this sensor. ...
4
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1answer
5k views

Smell of Ammonia when driving. What can be the reason?

I started smelling ammonia when a drive. What can be the reason? I did recently changed the exhaust pipe. I drive infinity G35.
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1answer
524 views

My feet turn black

I left the pedicure salon, started my car and drove less than 3 miles to pick up something from the store, when I stepped out of my car my feet were black... and I don't meant just from dirt, It ...
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0answers
454 views

Oddball Cat and Exhaust Manifold 04 Nissan Xterra

I recently got the p0420 code and narrowed the issue down to needing a new cat. Thought i'd be smart and went to Walker identify the exhaust for a basic '04 Nissan Xterra XE, 4WD, 3.3L. Found the ...
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1answer
136 views

2002 Mercedes E320 - Exhaust getting into the cabin of the vehicle and causing headaches

Experiencing exhaust fumes in the car. It's causing eyes burning and headaches after driving the car for 30 minutes. The Dealer checked and found nothing wrong but every time after driving the car ...

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