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2008 Nissan maxima SE

1K views 1 reply 2 participants last post by  rogoman 
#1 ·
Bad rotten egg smell? 187,000. no check engine light. Car just repaired after accident. Set of new exhaust pipes. Can't figure out why all the sudden the nasty smell? help
 
#2 ·
You may have a broken/worn down catalytic converter. When the converter breaks or the filtering layers have worn down inside the converter, the sulfur is not transformed into the odorless form, therefore a strong rotten egg smell is produced. Another possible cause for this smell may be that the converter is plugged. Unfortunately you cannot repair a converter but need to have it completely replaced. Two other possible causes of rotten egg smell is an engine that is running too hot or a broken fuel pressure regulator.
 
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