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How is it running? Is the mileage ok? Have you checked the computer diagnostic codes? It's possible that the ignition isn't doing well and you're getting unburned hydrocarbons out the exhaust. It's possible that the oxygen sensor is bad and that the engine is getting too much fuel in an effort to compensate. It's possible that there is a problem with the EGR valve or even the catalytic converter.

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โˆ™ 2006-04-16 02:31:35
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Q: Why does your 1994 chev c1500 with a 5.7Lt smell of a strong gas odor at exhaust when idling?
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