Motor Vehicle Maintenance and Repair Stack Exchange
Motor Vehicle Maintenance and Repair Stack Exchange

Questions tagged [exhaust]

Questions about Exhaust systems, Catalytic Converters and Headers/Manifolds

A set of hollow tubes or pipes that burnt fuel gasses flow into on an internal combustion engine. The exhaust system can be comprised of an exhaust manifold, catalytic converter, header pipe and muffler as well as house various sensors.

Image of an exhaust system for an automobile

enter image description here

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What is the best way to remove a stuck/rusted exhaust bolt?

I'm trying to disassemble the exhaust system on a 2000-2003 Nissan Maxima and I'm having trouble removing one last bolt. It's got a 14mm head and its just plain STUCK. I've tried soaking it overnight with PB Blaster, then the next morning I tried…
NoCarrier
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What does pie cut exhaust mean?

As the title says, when looking at building a custom exhaust system I've heard the reference called pie cut exhaust but I was unable to find any definition or terminology so I was curious to know what does it mean?
Hᴇʀʙɪᴇ
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Is it possible for a vehicle to be manufactured without a catalytic converter?

Can a new vehicle from a plant be produced without a catalytic converter? Is it possible? I am a lecturer at a college in Zimbabwe, and my students recently asked this question, so I am researching.
Charly K Mwamber
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Why is my exhaust pipe so rusty?

I think all cars exhaust pipes get very rusty after not very long. Why is that? I know that the pipe gets extremely hot, but how come that makes it rust more than any other part of the car?
Sponge Bob
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How effective are exhaust patch kits?

How effective are exhaust patch kits in terms of longevity and limiting noise and leakage? Specifically I'm looking at using the kind that consist of heat-activated tape, an aluminium sheet and two pipe clamps, like this one, on a very small hole…
nwellcome
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should I replace gaskets when replacing exhaust?

I need to replace a broken section of exhaust. Should I replace the gaskets also? one of the gaskets is directly between the engine and the new part. The other is between the new and an old part of the exhaust.
Mark W
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Repairing a thin cut in exhaust pipe

I am looking for a way to repair a small hole I created in my exhaust. The hole is about 1 to 1.5 inches long and only about the width of a cutting wheel (you can guess how the hole got there). I was considering using a jb weld type product but i…
O'Mutt
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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 manifold, so I couldn't really get any leverage with…
wheeler
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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 not often. But every single time I get out, it's…
temporary_user_name
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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 throttle it sounded like a spitting with your…
Kromster
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Is it normal for decat car to smell bad?

civic vti 1999. Car has decat and smells bad and toxic. I’m a sensitive individual so probably worse for me than others. There are no bad smells like egg smells however when near exhaust it just smells like a bad and chemical. There are no…
James Wilson
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Why do some cars fart?

Sometimes, I'll hear Mustangs and Honda Civics "farting" and making loud noises. What is the cause of this and why doesn't my car do it?
Jossie Calderon
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Most durable exhaust hanger?

I have a 2004 f150 and the exhaust hangers have rotted off except that last one at the very back (hook though rubber isolator). My exhaust pipe keeps twisting so that the tailpipe is against the passenger side rear quarter panel behind the wheel…
BingBong
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What is this exhaust type thing?

What is this black exhaust type thing coming off the side of this land cruiser? What is it for?
ian
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What is the most durable material for exhaust systems?

What is the most durable, long-life material for exhaust systems? I assume this is probably stainless steel, though even for that there are different grades of the metal. When looking for aftermarket exhaust components, is there some way that…
Dale Mahalko
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