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Thread: ignition timing wtf

  1. #41
    Senior Member s14seriesII's Avatar
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    take a video of what its doing and post it up rather than swapping parts till you stumble upon whats wrong
    Owner built and tuned 9000rpm 402kw atw 3sGTE - AE86

    Quote Originally Posted by Beau View Post
    4ages are for the scared

  2. #42
    Veteran timbo's Avatar
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    do you mean driving it without a fuel pump???

    will try and get one tomorrow. i don't see how it will be of much use though, it doesn't rev past 3500rpm under load...

  3. #43
    Veteran slide86's Avatar
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    starting to sound like it has no fuel pressure.

    crimp the return line with pliers or vice grips then drive and see if its better

  4. #44
    Gone
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    nah it make the fuel pump run constantly... i thought that if the rail was pressurised enough then u gave it a boot.. the 1 or 2nd time's it may not misfire as their would be sufficient fuel pressure in the rail...

    just tossing up ideas.

  5. #45
    Senior Member s14seriesII's Avatar
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    might be easier to diagnose from a video than your description.. no offence
    Owner built and tuned 9000rpm 402kw atw 3sGTE - AE86

    Quote Originally Posted by Beau View Post
    4ages are for the scared

  6. #46
    Veteran timbo's Avatar
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    all good, will try that and let you know the results


    no offence taken, prob get it done tomorrow when someone can film for me whilst i drive and not crash...

  7. #47
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    ok, vids as requested. not great but you get the idea.

    this is with the car in neutral:



    this is driving with full throttle, it only just revs to 4000rpm, really struggled.


  8. #48
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    Sounds like it's in limp mode sorta.....

    Reminds me of when my bigport was running in limpmode, would rev to 4000 but not any further with WOT. However if you got to 4000rpm at wot and began to release, it would rev more...... It also had a miss when in limp mode.

    Maybe check your distributor plug to see if there are any damaged wires/loose contacts and same with your ignitor aswell.
    1983 AE86 ADM rust spec goodness track car build - end of the road
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  9. #49
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    replaced the fuel filter today, made quite a noticeable difference. also cleaned the fuel lines and the pump works fine... (don't ask). so we are thinking it is the injectors. i did fuel up the same day as i replaced the dizzy o-ring so it could have been a bad batch. will post up details after cleaning.

  10. #50
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    have you done a diagnostic check on the ecu yet?
    In faith there is enough light for those who want to believe and enough shadows to blind those who don't.
    - Blaise Pascal

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