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backfire 6.0 bad

This is a discussion on backfire 6.0 bad within the Internal Engine forums, part of the LSx Technical Help Section category; i need some help i have a 6.0 in a 98 s10 and at idle it will back fire out ...

  1. #1
    Junior Member
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    white
    94 with 98 ls1 z28

    backfire 6.0 bad

    i need some help i have a 6.0 in a 98 s10 and at idle it will back fire out the exhaust and if you give it gas it gets worse i have a wiring harness that was custom made and the computer was tuned by pcmfor less he took out the egr air pump and the evap and the rear o2 sensor i have had some people say it was timing and other say it is fuel any help would be great thanks

  2. #2
    Senior Member mrr23's Avatar
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    Jul 2005
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    orlando, fl
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    dark bowling green
    2000 corvette

    is this just a stock 6.0L, or was this motor modified with cam, heads, etc...

  3. #3
    Junior Member
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    Blue
    1995 Caprice

    Double check your coils,, Make sure the Left and Right banks are not switched. ROger

  4. #4
    Junior Member
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    white
    94 with 98 ls1 z28

    thats what it was

  5. #5
    Junior Member
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    1995 Caprice

    Koool,, Ask me how I guessed. LOL .. Glad to hear ya got it going... Roger

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