gs 450 engine knock help

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  • gs450buggy

    #1

    gs 450 engine knock help

    started my gs450 motor and notice when its in high rpms it sounds like a knock in the top end doesnt do it at idle or low rpms and when it does it it doesnt follow revs like knock knock knock etc is sounds like a valve bouncing up and down took off valve cover cam timing is good any help is appreciated
  • Guest

    #2
    Have you done a valve adjustment yet? And a carb synch (after the valves)?

    Quick edit: Missed that this was your first post, so welcome to the forums
    Last edited by Guest; 05-25-2011, 02:36 PM. Reason: Missed somethin'...

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