Spark Plug Smashed
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Thread: Spark Plug Smashed

  1. #1
    Junior Member Deli's Avatar
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    Lightbulb Spark Plug Smashed

    Hey, Does anyone know what causes my spark plug to become smashed? I Think the piston head is hitting it but what would cause that? Please help?

    Thanks so much.

  2. #2
    Senior Member Action69's Avatar
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    The first thing that comes to mind is you have a long rod crank but no spacer plate under the cylinder..

  3. #3
    Member PJ UPTMOR's Avatar
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    How long have you had this quad? Might need to ask the previous own if you have a long rod or short rod in the engine.

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  5. #4
    Senior Member american opel's Avatar
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    yeah several things can cause it.wrong piston,rod combo.someone forgot to put needle bearing in the rod,etc.

  6. #5
    Super Moderator Big_Mike's Avatar
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    Pull the head off and look at the condition of the piston.. Is the motor making obvious noise is it even running? What plug are you using?
    1986 Honda FourTrax 250R
    BDT Puma coming soon..

  7. #6
    Senior Member acecarlos's Avatar
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    Quote Originally Posted by Deli View Post
    Hey, Does anyone know what causes my spark plug to become smashed? I Think the piston head is hitting it but what would cause that? Please help?

    Thanks so much.
    If it's the "Spark Plug Smashed", the piston can't hit it. If the electrode is smashed on the spark plug; it's detonation on steroids...!

    Carlos
    Last edited by acecarlos; 09-26-2019 at 04:37 PM.
    Big_Mike likes this.


 

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