jahluvdiesel

I run a 98 24 valve with stock exhaust. The heater fan seems to pick up exhaust smoke when I am sitting with the engine idling. It is worse if there is a tail wind. Is there any way short of installing a vertical stack to alleviate this problem. My exhaust system is sound. I need help.

Shovelhead

Pop the hood and make sure the cowl seal is still in place.
Near the back of the engine compartment, along the front of the wiper shelf.
If it falls down (real common occurance) you will get a whiff of the fumes from the engine breather system.

Turbobob

Geno's sells a filter that goes up on the cowl area below the wipers. It says it reduces odors & dust by 70%. Check it out!