Exhause smell in car

SIXSON63

MEMBER
2003 OLDSMOBILE ALERO
4 CYL
2WD
AUTOMATIC
145,600 MILES

I have a 2003 Alero with 145K miles. About 25K miles ago I started smelling exhaust in the car when stopped at a light or stop sign. I don't notice any performance problems, fuel mileage is excellent, and I don't hear any excessive exhaust noise when accelerating. Any ideas?

Saturday, March 12th, 2011 AT 4:18 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

If you smell it in the car, check for exhaust manifold leaks. Also, check for leaks after the muffler if there has been no change in sound.

Was this

answer

helpful?

Yes

Thursday, April 7th, 2011 AT 1:38 PM

SIXSON63

MEMBER
2 POSTS

Thanks. There has been no change in sound, the manifold was my first guess as well, but again, no change in sound. When I put the ventilation on recirculate the exhaust smell goes away. Anything else I should look at?

Was this

answer

helpful?

Yes

Thursday, April 7th, 2011 AT 8:27 PM

JACOBANDNICKOLAS

MECHANIC
110,176 POSTS

Keep in mind, a manifold leak will most likely make a slight ticking sound. Also, check to make sure there are no leaks near the Y-pipe and the EGR. We own an expedition that was doing the same thing. My wife drives it. She smelled exhaust just as you described, but she never told me she heard a slight ticking sound in the AM, It was a cracked manifold.

Let me know what you find.

Was this

answer

helpful?

Yes

Friday, April 8th, 2011 AT 2:19 AM