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Finding an exhaust leak

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USSEnterprise:
My car has a relatively bad exhaust leak. Not enough to kill you, but the smell inside the car is pretty noticeable. I doubt it would pass inspection. Anyone know of a means of locating the leak? I was thinking of running compressed air through the system, with all the pipes covered in liquid soap, but I don't know how I would go about getting the compressed air into the system. Any ideas? Any other methods?

FrizzleFried:
You can usually hear exhaust leaks when the engine is running.  Start her up,  go under the car and start looking/listening.

USSEnterprise:
problem is, for as long as I have had the car, it has had the exhaust leak, and I have no other 850 to compare the sound to.

TOK:
Instead of liquid soap and compressed air, just use some light spray oil and let the car run. It will bubble at the leak. If you're smelling it strongly inside while driving, my guess would be the exhaust manifold gasket right at the head. Leaks at the collector below are in the airflow and tend to just blow past without entering the cabin.

USSEnterprise:

--- Quote from: TOK on March 09, 2007, 09:40:04 pm ---Instead of liquid soap and compressed air, just use some light spray oil and let the car run. It will bubble at the leak. If you're smelling it strongly inside while driving, my guess would be the exhaust manifold gasket right at the head. Leaks at the collector below are in the airflow and tend to just blow past without entering the cabin.


--- End quote ---
Spray oil, as in something like WD-40?
I really hope its not the exhaust manifold gasket. That would be so much friggin work. I couldn't do it myself. $ :hissy:

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