Jim Grant's Tech Tips
95
Chevy Impala, Cold Exhaust Leaks
Q: I have a '95 Impala SS. It sounds like it
has an exhaust leak, when the engine is first started. After driving for
about 10 minutes or so it goes away. Can you help?
A: If
it sounds like an exhaust leak, it probably is. While the engine is cold,
closely inspect the exhaust manifolds primarily near the rear of the engine;
that's where the problems most commonly are found. Usually you'll find
that a bolt has loosened up allowing the exhaust manifold to pull away
from the engine. As the engine heats up the exhaust manifold expands closing
the exhaust leak. I would recommend having the problem corrected before
it gets worse or requires additional parts and labor.
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