weird spark plug, is this normal??
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weird spark plug, is this normal??

  1. #1
    Senior Member sleekcraft137's Avatar
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    Default weird spark plug, is this normal??

    So i had the boat out today for a few hours. I pulled the spark plugs to see how it was running(i changed the carb) as you can see its running lean.....no biggie. But do you see something that looks wrong with the plug?? notice the center. Is that normal?
    And the new project begins!

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    Senior Member GT Jets's Avatar
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    That plug looks broken from detonation....
    GT


    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    Super Moderator HammerDown's Avatar
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    Damn...my mother always told me my vision would go blurry if I kept playing with it
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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  6. #4
    Senior Member sleekcraft137's Avatar
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    Quote Originally Posted by GT Jets View Post
    That plug looks broken from detonation....
    wouldnt it be loose??
    And the new project begins!

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    Senior Member s2k1's Avatar
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    Cut the shell off so we can see the bottom of the insulator.
    Chris @ Benchmark Performance

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    Senior Member GT Jets's Avatar
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    Quote Originally Posted by sleekcraft137 View Post
    wouldnt it be loose??

    There is a metal rod going through the white part.......so i guess no?

    Unless it looked exactly like that when you put it in, that is a mechanical failure due to something hitting it, or concussion from detonation....

    Lean knock? Timing too advanced? Cross arching in cap?

    Good hunting...Anyone else have an idea?...I have to stop looking at it before my eyes start to bleed... LOL
    GT


    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

  9. #7
    Senior Member sleekcraft137's Avatar
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    Quote Originally Posted by GT Jets View Post
    There is a metal rod going through the white part.......so i guess no?

    Unless it looked exactly like that when you put it in, that is a mechanical failure due to something hitting it, or concussion from detonation....

    Lean knock? Timing too advanced? Cross arching in cap?

    Good hunting...Anyone else have an idea?...I have to stop looking at it before my eyes start to bleed... LOL
    Motor ran great today........i know its running lean. I'm going to put the other carb back on and try again. I'll double check timing, its just weird b/c i didnt hear anything weird and the boat ran GREAT today.
    And the new project begins!

  10. #8
    Senior Member 74glencoe's Avatar
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    Default calm B4 storm

    Be careful, they run the best right before they go BNAG!!!
    Boating is nothing like cocaine, boating is much more addictive and results in bigger parties!

  11. #9
    Senior Member sleekcraft137's Avatar
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    Quote Originally Posted by 74glencoe View Post
    Be careful, they run the best right before they go BNAG!!!
    LL, yeah no kidding!! The "too good to be true" syndrome. I switched to a 750 carb when I changed the intake manifold. So I'm going to try the 650 again to see what happens. This plug and one other are new, the other plugs were a nice coffee color but seem to be lightening up. I guess its time to break out the timing light as well.
    And the new project begins!

  12. #10
    Senior Member Mojave85's Avatar
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    Hey Sleek, sorry I missed you at the lake Tuesday. I had to go to the dentist for an appointment after work. Did you see any of the other guys up there or was it to windy for the flats? Did you decide to keep the boat?

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