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  1. #1
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    Default Plugs fouling up

    I need help my spark plugs keep fouling up i have a 304 holley 750 dbl pumper carby camed harrop tunnel hirise
    Any ideas? Cheers

  2. #2
    254RWHP boat anchor EVL253's Avatar
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    what jets etc.pretty big manifold & carb on a 304 just saying
    11 second E85 bottle fed boat anchor

  3. #3
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    65 on front and 68 on back. And yeah

  4. #4
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    65 on front and 68 in back. And yeah

  5. #5
    Satin Cenners or F**k off GassedupPlastic's Avatar
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    plug heat range? is the exhaust free flowing? is the power valve ok? are the idle mixture screws out to far?
    lemmy guess 750 HP? bloody hate HP metering blocks on mild motors they always foul plugs out of teh box

  6. #6
    Do you ever leave? HQ308Ute's Avatar
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    going with EVL253.. Big radical top end on mouse motor. you'd have to driving around screaming its ass off just to get a decent flow rate.
    Last edited by HQ308Ute; 10-12-2012 at 08:34 PM.

  7. #7
    254RWHP boat anchor EVL253's Avatar
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    what's the list number.normally if u kill the signal u need bigger jets.those sound pretty small.it can lean misfire. what sort of spark plugs?
    11 second E85 bottle fed boat anchor

  8. #8
    Satin Cenners or F**k off GassedupPlastic's Avatar
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    Quote Originally Posted by EVL253 View Post
    what's the list number.normally if u kill the signal u need bigger jets.those sound pretty small.it can lean misfire. what sort of spark plugs?
    but the thread is about fouled lugs

  9. #9
    casual poster Madogg's Avatar
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    Post a photo. Can be lots of things. Are they fouling black sooty or is it black shiny? Sooty is either retarded timing or running to rich. Shiny or gungy is burning oil.
    If everything is right and the heat range is correct then they should keep themselves clean.

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