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Thread: misfire

  
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    turbodara's Avatar
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    misfire

    when i put my foot down 1/4 of the way and leav it there all the way up to 4000rpm it jerks but after that its fine but if i put my foot flat to the floor it dont do it

    any ideas anyone ?
    Back to the drawing board for the 2nd ACT

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    rob_coupe's Avatar
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    What spark plugs you running? I had this problem until i fitted some NGK Iridium ones. Think the spark was blowing out under boost. Do a quick search for iridium plugs mite tell you a bit more.....

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    LoopyOpal's Avatar
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    Run ur car with a Tech 2 on a road test - I bet my bottom dollar it will come out with O2 sensor upstream!

    I had the same problem .....

    if i remember you were having turbo probs in the past?? thats were mine stemed from!
    If your turbos burning oil it effects the O2 reading hence the fault. If not then faulty O2 sensor full stop...but run a Tech 2 1st - it'll save you heaps of time!

    keep us updated

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    ShEp's Avatar
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    check the wiring on the boost pressure sensor, located on the intercooler pipe at the front of the engine,

    my car is doing exactly the same,

    vauxhall are useless dont take it anywhere near them, they'll put a coil pack on and send you home, like they;ve done to me twice

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