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95 S420 exhaust stinks - like gun powder smell

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Old 08-10-2006, 12:39 PM
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95 S420 exhaust stinks - like gun powder smell

Suddenly the exhaust fume stinks like gunpowder smell- real bad.
Any suggestions? May be O2 senser or CO2 senser malfunction? vaccum hose problem? All tips welcomes.
Thanks you in advance.
Old 08-10-2006, 03:05 PM
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2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Likely to be bad CATs.

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