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  1. #1

    engine sputters at high rpm

    i have a 2000 gp 1200r 165 hours the only mods i have is a riva d-plate and temp chip it has new oilpump, spark plugs and professionally rebuilt carbs. it ran fine for about ten hours then it started doing this. the only thing i cld think is maybe bad fuel any ideas?


  2. #2
    With 165 hrs it would be a good time for a new top end. I would run a compretion test and pull the head to look for scoreing

  3. #3
    All hail the Chief! fullboogie's Avatar
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    Quote Originally Posted by Coyote13 View Post
    With 165 hrs it would be a good time for a new top end. I would run a compretion test and pull the head to look for scoreing
    That's impossible to say without more information.

    To the OP, can you give us a better description of what it's doing? At what rpm? Any rpm loss? Any mph loss?

  4. #4
    Sorry didn't mean that's would be the problem. Was just saying that at that many hrs it's time and 9 time out 10 when you get in to it you find other things that could be the problem or become one.

    Dose it have power valves and if so are they updated

  5. #5
    it happens around 6000 then jst sounds like its misfires and keeps popping it idles fine original powervalves

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