Question about 1999 Chevrolet Silverado 1500

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Truck backfiring willnot idle

I have a 79 chevy 350w/ edelbrock 750.was stoped going to jar down on it.ran through 1,2,3.when i was at about 75 i let off and it started backfiring out the pipes.still backfiring not ideling right.(HELP)

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  • lcarpenter24 Feb 07, 2009

    no exhaust leaks.nohead gasket problems

  • Jay Glendenning
    Jay Glendenning May 11, 2010

    have you checked timing?

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Check your head gaskets. And your exhaust gaskets, you have blew one of the gaskets your head gasket will leak oil and your oil will look milky and watery. Your exhaust you are going to have to take off and see

Posted on Feb 07, 2009

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