Question about 1985 Cadillac DeVille

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1992 Silverado backfiring through the throttle body

My 1992 Chevy Silverado recently started sputtering and backfiring through the throttle body. The problem isn't as bad when dry but when it rains the problem becomes much worse. What do i need to replace?

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  • redlnader Feb 03, 2009

    1993 4.3 standard trany backfire in throttle body worst when it rains

  • Germay May 04, 2013

    checking that is no fult ther

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Ok I tray that

Posted on May 04, 2013

  • Germay May 04, 2013

    my car is 307 202 paguote

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You could put the pickup on a cylinder pressure test and see if you have a bad valve causing the engine to pop.
you could have a bad wire or spark plug.
the timming chain could of went off a cog on the timming sprokets causing to pop.
gettin to much gas could cause it to.

Posted on Jan 23, 2009

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