LEAKY FLANGE GASKET (DONUT) BETWEEN THE EXHAUST MANIFOLD & EXHAUST PIPE?

What is your question?

My chevy lumina 95 3.1L V6 has a weak/small and intermitten leak at the flange gasket between the exhaust manifold and the exhaust pipe before the catalytic converter. Will this leak cause a problem with California smog test? NOx? Thanks in advance for your replies!

carzen in Moorpark CA

Feb 9, 2015

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