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Thread: Misfires at 6500

  1. #1
    Senior Member RACING JUNKIE BEAST477's Avatar
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    Misfires at 6500

    Anybody else ever have this problem?

    When running my crank trigger it misfires at 6500 and up. Wont pull over 6700.
    Now if I disconnect the crank trigger and hook back up to the distributor it runs fine.
    I am running a altenator was wondering if that could be doing it?
    BEAST477






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  2. #2
    Senior Member RACING JUNKIE
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    Re: Misfires at 6500

    Quote Originally Posted by BEAST477
    Anybody else ever have this problem?

    When running my crank trigger it misfires at 6500 and up. Wont pull over 6700.
    Now if I disconnect the crank trigger and hook back up to the distributor it runs fine.
    I am running a altenator was wondering if that could be doing it?
    that what mine was doing and it was my tach messing up and back feeding :wink:
    GOOD PARTS AREN'T CHEAP AND CHEAP PARTS ARE NEVER GOOD.........
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  3. #3
    Senior Member RACING JUNKIE BEAST477's Avatar
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    Re: Misfires at 6500

    Quote Originally Posted by fast75vega
    Quote Originally Posted by BEAST477
    Anybody else ever have this problem?

    When running my crank trigger it misfires at 6500 and up. Wont pull over 6700.
    Now if I disconnect the crank trigger and hook back up to the distributor it runs fine.
    I am running a altenator was wondering if that could be doing it?
    that what mine was doing and it was my tach messing up and back feeding :wink:
    Yes, but it only does it when I'm trying to use the trigger. Runs fine with the distributor. Going to ohm the pickup and see what it reads I guess.
    BEAST477






    Only a rich man can afford to use cheap parts.

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  4. #4
    Senior Member DYNO OPERATOR
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    misfires

    Too much air gap?

    .040" should work. Maybe even .030" just to see if that's it?

  5. #5
    Senior Member RACING JUNKIE BEAST477's Avatar
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    Re: misfires

    Quote Originally Posted by markdunlap
    Too much air gap?

    .040" should work. Maybe even .030" just to see if that's it?
    I thought .060 air gap was the minimum.
    BEAST477






    Only a rich man can afford to use cheap parts.

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  6. #6
    Senior Member RACING JUNKIE
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    Re: misfires

    Quote Originally Posted by BEAST477
    Quote Originally Posted by markdunlap
    Too much air gap?

    .040" should work. Maybe even .030" just to see if that's it?
    I thought .060 air gap was the minimum.
    It is .. no need to run under 60. I always run mine @ 65. It missed at 100 gap.


    Did you phase it in when using the crank trigger ? Make sure no magnets are loose on the wheel itself, and last I have a few spare pickups, your welcome to try one.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

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