flange gasket leak - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
 
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post #1 of 2 (permalink) Old 10-18-2015, 03:40 PM Thread Starter
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flange gasket leak

So it all began with a cracked flex pipe. Replaced the pipe and flange that bolts up to exhaust manifold. Also replaced the gaskets on each end of the flex pipe/ catalytic converter. To the point though. I've replaced these gaskets 3 times already. 2 times with metal gaskets, and once with a paper type material. All three times the manifold to flex pipe gasket has leaked. I've caked it with copper ultra rtv, I've checked the surfaces with a straight edge, ect. I've done plenty of research on the causes and solutions for this issue. Still can't figure it out. Any suggestions would be much appreciated. Thanks
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post #2 of 2 (permalink) Old 10-22-2015, 12:54 AM
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Hmmm. In my idea this would be best time to replace your exhaust for a full exhaust kit. For as you said you have replaced the thing for 3 times now.

Last edited by cobalt-red; 10-22-2015 at 07:12 PM.
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