MisFire vs Backfire. What is the difference?

Posted by TURBOSPYDER, Jun 11, 2002
Newbie Forum - Beginner DSM modification questions and discussions. Common, repetitive, and general discussions will get dumped here from other tech forums. Unless you're a Probationary member you shouldn't post threads here.

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  1. TURBOSPYDER

    TURBOSPYDER Proven Member

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    Daly City, BAY_AREA
    Im not sure if they are the same thing. I datalog my car , and showed trouble codes of a Cylinder 1 misfire. I changed the plugs and its still happening but only when Im running the car normal. Not at WOT. Plus, does anyone know what trouble code : P0300????? any info can help . Thanks
     
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  2. NJGSX96

    NJGSX96 Proven Member

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    P0300 - Random/Multiple cylinder misfire detected
     
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  3. g96nt

    g96nt Proven Member

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    misfire..... it just doesn't feel right..

    at idle, you'll have a sputter, stutter, spit, or burp
    and at speed, it'll jsut give a jitter, or WAY up there, it'll feel like the Car stalls For a split-second.


    a back-fire.... you'll *KNOW* it'll be like *BLAT* POP, BANG, or even explode, if you're lucky...

    backfire is when you have Fuel get past The exhaust valves, into the exhaust, and It hits somethign *HOT* and ignites... could be a Really hot Cat, muffler, or even a toasty-warm turbo/o2 housing.
     
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  4. TURBOSPYDER

    TURBOSPYDER Proven Member

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    So what does a misfire mean? anything I can do to prevent it? What causes misfire?
     
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  5. g96nt

    g96nt Proven Member

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    to Corect misfire?

    re-gap you plugs.... check your plug wires...
    make sure you have no intake leaks..

    tune your Car.. do you have a datalogger?

    check your sensors (front O2, TPS, ISC..)
     
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  6. g96nt

    g96nt Proven Member

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    to Corect misfire?

    re-gap you plugs.... check your plug wires...
    make sure you have no intake leaks..

    tune your Car.. do you have a datalogger?

    check your sensors (front O2, TPS, ISC..)
     
    #6
  7. allturbo

    allturbo Proven Member

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    socal, California
    A cam angle sensor going bad will cause misfires.
     
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