Something new is happening

Everytime I make a right hand turn between 5 and 30 mph I get a whiff of engine (underhood smell), any idea's?

 

Either you just had your oil changed, or your cowl seal has fallen down.

Cowl seal: rubber strip running along where the hood meets the bottom of the windshield/top of the firewall.


phox

 

Oil last changed to synthetic 4000 miles ago and new cowl weather strip installed last year and still in place.

More info:

I can't smell any thing from outside when truck is running

no smell driving straight or left turn only right

Is it possible for the odor to come through the hvac system?

I have not done a thorough inspection yet but thought someone else might have experienced this?


Mark

 

The cowl seal also ,has two foam pieces at either end near the hinges that should be tight. The cowl air box, located under the black plastic cover at the bottom of the windshield leaks fumes too. The holes in it should have flappers on them or be sealed up. I used alloy tape like used on AC ducting to seal all holes. You have to pull the wiper arms and plastic cover off to get to this air box but it is worth sealing it up. Now all I need is a filter set up that Geno's Garage sells to eliminate road dust and odor.