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Thread: flashing around spark plug boot

  1. #1
    Junior Member SHOW GUEST
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    flashing around spark plug boot

    hey guys, I just installed a new msd hvc 2 coil on my car because of another coil arcing. The car runs fine. just for fun , though , we shut all the lights off in the garage to check the rest of the ignition wires.We did see flashing , not arcing , at the spark plug boots. i did put dielectric grease on the terminals. I have seen this before but just wondering what it is and if it is normal?It's got an msd 7al2 and both heads are grounded.Thanks.

  2. #2
    Senior Member MASTER BUILDER
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    IMO if it is flashing around a boot then i would think the boots bad if it is secured on sparkplug properly

  3. #3
    Senior Member RACING JUNKIE
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    IMHO It's time for a new set of plug wires :shock:
    No matter where you go, there you are.
    **IN GOD WE TRUST**

  4. #4
    Senior Member MASTER BUILDER
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    I agree You need new wires!!!!!!!!! You should see Nothing if you shout the lights off...You are producing a ton of resistance that will cause the ignition
    to fail sooner or later!!!!!!!!Good luck

  5. #5
    Junior Member SHOW GUEST
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    Sorry , I forgot to mention i have new msd 8.5 wires.Maybe that's why my coils keep going bad?

  6. #6
    Senior Member RACING JUNKIE
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    Quote Originally Posted by hkfs72
    Sorry , I forgot to mention i have new msd 8.5 wires.Maybe that's why my coils keep going bad?
    Moroso ultra 40's if you get another set .. I'd be calling MSD and asking why its doing it. I agree with all the above needs new plug wires .
    David Lanning
    IHRA NHRA 387B

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

  7. #7
    Senior Member RACING JUNKIE jmarksdragster's Avatar
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    Make sure you don't have too much resistance somewhere else. Cap and rotor, and rotor phasing need to be good. Also tighten up the plug gap, .030 should be good. When going to the Digital 7 and HVC II in my new car I fried the center conductor on my HEI distributor, I had to get a low resistance one that MSD sells.
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  8. #8
    Senior Member DYNO OPERATOR
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    Call MSD!!!!!!!!!!!!!! David.

  9. #9
    Junior Member SHOW GUEST
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    Thanks for the replies. Did anybody else check their cars for this?

  10. #10
    Senior Member RACING JUNKIE
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    Quote Originally Posted by hkfs72
    Thanks for the replies. Did anybody else check their cars for this?
    I've had my cars running several times in the dark ... this isnt something that is suppose to happen.
    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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