Exhaust leak sound
09-26-2005 | 04:37 PM
#1
Thread Starter
Racer
Joined: Sep 2002
Posts: 293
Likes: 1
From: Prather, California: somewhere in the middle of the State
Exhaust leak sound
Wife's '91 C2 recently began to make a noise from left side of engine that sounds like an exhaust leak. It reminds me of the old days when the muffler would rust out. A visual exam with engine off did not reveal any holes in the system. When at idle I cannot locate the source of the noise, but can definately hear the sound.
Before I start tearing anything apart, does anyone have any experience of similar "leaks" and is there a way to locate the source of the leak?
Before I start tearing anything apart, does anyone have any experience of similar "leaks" and is there a way to locate the source of the leak?
09-26-2005 | 04:55 PM
#2
Nordschleife Master
Joined: Sep 2004
Posts: 5,061
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From: not in HRM
Hiya Jerry Garwick
Do you have a stethoscope ?
http://www.chain-auto-tools.com/engi...ls/AMR199L.htm
http://www.toolshoplist.com/product_...roducts_id/550
If you don't , a hose in the ear test will do .
Do you have a stethoscope ?
http://www.chain-auto-tools.com/engi...ls/AMR199L.htm
http://www.toolshoplist.com/product_...roducts_id/550
If you don't , a hose in the ear test will do .
09-26-2005 | 05:28 PM
#3
Professor of Pending Projects
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From: Orlando, FL
The gaskets in our car's exhaust system are big metal pieces. Only the Cat has a "normal" flat metal gasket. With time/rust/etc sometimes the clamp, or gasket break. Follow Indycam recomendation to narrow down where the leak is...
09-26-2005 | 08:48 PM
#4
Technical Guru
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From: USVI
Originally Posted by Jerry Garwick
Before I start tearing anything apart, does anyone have any experience of similar "leaks" and is there a way to locate the source of the leak?
10-03-2005 | 02:15 PM
#5
Thread Starter
Racer
Joined: Sep 2002
Posts: 293
Likes: 1
From: Prather, California: somewhere in the middle of the State
Here is the follow up on the exhaust leak. After removing the heat shields around the cat I could feel the exhaust leak around the flange and tube of the front end of the cat. When I removed the cat I found that the tube part of the cat completely disconnected from the flange. I welded it back in place and after much cursing and breaking several bolts, managed to get the flanges to seal. Problem solved. But I was very surprised to find the flange disconnected in the first place. This would have an expensive problem if I had taken it to a Porsche shop. I think they would have sold me a new cat.
