Exhaust manifold leak - how to detect? - Saabnet.com Bulletin Board


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Exhaust manifold leak - how to detect?
Posted by three_jeeps (more from three_jeeps) on Tue, 13 Mar 2018 13:19:26
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My 2004 arc engine seems to be a bit noisy on startup. Sounds like its sputtering. Cold weather seems to make it nosier. Upon warmup it quiets down a bit but still rattles.

I suspect the exhaust manifold and/or gasket and want to check it. On non-turbo vehicles, I've hooked up a shop vac on the tail pipe and connected the hose to the exhaust of the vac, essentially blowing air backwards through the system, and going around the exhaust components with a spray bottle of soapy water. Probably not a good approach with a turbo?!?
Alternative approaches?
The exhaust manifold has never been off the vehicle and is original at 130Kmiles. Do they tend to deteriorate at this mileage/age?
Guidance appreciated. Thank you.
J


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