2004 GMC Envoy rotten egg smell all the time

Tiny
COLES3941
  • MEMBER
  • 2004 GMC ENVOY
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 105,000 MILES
I just bought this vehicle but the exuast always smells like rotten eggs. There are no lights on and it gets about 15 miles per gallon in town. It seems to run just fine.
Do you
have the same problem?
Yes
No
Thursday, April 30th, 2009 AT 2:00 AM

1 Reply

Tiny
RASMATAZ
  • MEMBER
A rich fuel mixture will often produce a "rotten egg" odor in the exhaust (the smell is hydrogen sulfide). Underlying problems may include an engine management system that is not going into closed loop (check the coolant and oxygen sensors, or for a thermostat stick in the open position), plugged PCV valve, or excessive fuel pressure (bad fuel regulator).
Was this
answer
helpful?
Yes
No
Thursday, April 30th, 2009 AT 2:04 AM

Please login or register to post a reply.

Related General Content

Drill Out a Bolt and Tap a Thread
VIDEO

Recommended Guides