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Misfire sound on left side of motor?

Discussion in 'XJ Technical Chat' started by Wildgamehunter, Jun 13, 2015.

  1. Wildgamehunter

    Wildgamehunter New Member

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    I recently bought an 82 maxim 750. Everything works fine other than a sound that worries me. It is almost a knock in one of the cylinders. As rpms increase, the knock increase rps as well. Going to pull the plugs today to see if they are bad and is just a mis fire. Wanted to post to see if anyone had suggestions. Thanks guys
     
    Wildgamehunter, Jun 13, 2015
    #1
  2. Stumplifter

    Stumplifter Well-Known Member

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    Check your valve clearances.
    A properly tuned bike will have a clippity clappity kind of noise to it but not a knock . . . Unless you valve clearances are out of spec, or something worse.
     
    Stumplifter, Jun 13, 2015
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  3. JaiFer

    JaiFer Member

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    Engines can knock for a variety of reasons low ie.( low octane gas, piston slap, crank bearings worn and out of round) and each has it's own sound. Try posting a video with audio, maybe someone can help you from there. Cheers
     
    JaiFer, Jun 13, 2015
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  4. mlew

    mlew Well-Known Member

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    Have you checked for exhaust leaks?
     
    mlew, Jun 13, 2015
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