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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
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    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
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    black
    2014 camaro 2ss/rs

    is this just a stock 6.0L, or was this motor modified with cam, heads, etc...
    Cold Air Intake, Muffler Delete, Vinci High Performance Dual Valve Springs, Hardened Pushrods, Yella Terra 1.85 Rockers, Some Hydropdipped Stuff, Strut Tower Brace, Some SS Badges, boost/vacuum gauge, fuel pressure gauge

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    1995 Caprice

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

  4. #4
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    white
    94 with 98 ls1 z28

    thats what it was

  5. #5
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    Koool,, Ask me how I guessed. LOL .. Glad to hear ya got it going... Roger

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