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  1. #1

    2001 gp1200r STOPS at high speed/power

    Ok. My newly acquired ski runs great up to a point.
    starts great, runs at 40 knots all day, however it STOPS after a few minutes at high
    speed. No bogging down, no missing, stops. Just like I pulled the safety lanyard.
    Once I coast to a stop, I can start the ski and take off and run 40 all day again, but once I hit high speed, STOPS again.

    Ideas?
    fuel flapper valve?
    CDI?
    Electrical?
    Power Valve?

    Compression 95/120/120 (not ideal)

    If anybody has ideas I would appreciate the help.


  2. #2
    powerstroke specialist mikegp's Avatar
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    compression looks compromise , 95 is really low , are you sure its not seizing and shutting down at wot?
    anyways your problem other than compression is related to fuel , time to clean inspect the whole fuel system and rebuild carbs.

  3. #3
    I'm not sure of anything. I was thinking fuel system at first, but it doesn't bog, sputter, or surge. Just dies. Through more research I'm leaning towards electrical. Thanks for the reply.

  4. #4
    powerstroke specialist mikegp's Avatar
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    since you can run the ski all day i will rule out any electrical imo , im more into fuel delivery issues , maybe bad fuel pumps or blockage somewhere , or just as simple as a bad fuel selector . remember wot throttle is where it needs the most fuel , if its short it will just die.

  5. #5
    Well I guess I will swap out the selector. I haven't tried putting it on reserve to see if that makes Ny difference since it is a different fuel line. What's your experience with that file flapper thingy that goes into the fuel tank? I'm searching for cheap, easy fixes

  6. #6
    powerstroke specialist mikegp's Avatar
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    on mine i bypass the fuel selector once for all , i end up using the reserve line straight into the fuel filter then to the carbs. regarding the flapper , it was remove .

  7. #7
    dockwalker's Avatar
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    Any water in the bilge?

  8. #8
    95 psi isn't right. You might wanna track that down, could just be a topend issue. And before it goes belly up and you're pulling the case apart.

  9. #9
    Prism's Avatar
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    Try it in the reserve position and see if you still have a problem. If the problem goes away on reserve, you probably have a warped fuel flapper on the sender causing a supply issue. See the stickys and look for fuel flapper removal post by Water Woody.

  10. #10
    Thanks guys! I will do as suggested and check back. As for water in the bilge, a small amount.

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