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BAD SMELL COMING FROM SOMEWHERE.
2002 GMC Sierra
June, 27, 2012 AT 9:41 PM
I have a rotten egg smell coming from the engine compartment. I can smell it through the vent while driving and when I park after I get out. What could cause this? I have heard a couple potential problems.
FOUND 104 RELATED QUESTIONS
Runs Bad Smells Bad
June, 27, 2012 AT 10:26 PM
That smell is coming from one of the catalytic converters, typically from a misfire that dumps raw fuel into the exhaust system.
June, 27, 2012 AT 11:11 PM
Caradiodoc is right- can also be caused by leaking injector(s). If this is the case, it may not miss but may be hard to start, and will show a noticeable decrease in mpg.
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