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2000 Chevrolet Impala rotten egg/sulfur gas smell

Tiny
2CP-ARCHIVES
  • MEMBER
  • 2000 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 55,273 MILES
2000 Chevrolet Impala mileage: 55,273. There is a rotten egg/sulfur gas smell every time I start up my 2000 Impala. You can actually see a haze in the air after the car is started and it takes about 20 minutes to get the smell out of the garage with the door open. It is a very potent odor. If the re-circulation vent is on outside air, you can actually smell this gas odor inside the car for about 10 minutes after running it. Can you tell me what the problem might be and what to look for? I have had new plugs installed in November, and the gas mileage is still excellent. Could it be the catalytic converter, exhaust or what? Any help and information on this matter would be greatly appreciated. Thank you.
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Wednesday, January 5th, 2011 AT 7:47 PM

2 Replies

Tiny
2CP-ARCHIVES
  • MEMBER
  • 4,542 POSTS
A faulty fuel pressure regulator may be your problem. This regulator leaks fuel into the engine when it is off which causes an over rich condition when the engine is started. This is the cause of the rotten egg smell.
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Friday, January 7th, 2011 AT 5:58 PM
Tiny
CLKEELE
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  • 10 POSTS
I'd agree with the experts opinion above. I have heard of many people having to replace their catalytic converter but not until well over 100,000 miles.
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Sunday, May 29th, 2011 AT 11:08 PM

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