Check for exhaust leaks.

Answered by Jacobandnickolas (expert)
57,318 answers provided

obvious answer! but what about pollen filters etc?

Response from fergus65
1 question asked

Pollen filter (Activated Charcoal Type) can not filter all exhaust smell, so replacing it won't fix the actual problem.

What engine is in your car?

Usual problems / smells are oil smells... due to oil leaking from the Valve Cover Gasket & the Chain Tensioner Gasket, that then drips onto
the exhaust manifolds & catalytic converter.... the smell then makes its way into the car via the fresh air intake / pollen filter.

Exhaust flex pipes are common leak areas.

Thomas

Answered by exovcds
0 questions asked