1996 Chevrolet Tahoe exhaust smell

96 chevy tahoe has exhaust smell. Canister has been replaced. Not sure what else could be causing it. Muffler is good. Even changed distributor cap a few times.

If the smell is getting in the passenger compartment while driving that could be dangerous.
Check for an exhaust leak, especially up front at the manifold and down pipe.


A 24 year old cast iron exhaust manifold is a very likely candidate for cracking. Check there first.

Here’s 2 guesses . . .

exhaust manifold flange gasket(s) leaking

broken exhaust manifold bolts