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  1. #1

    1100 raider engine problem

    i have a 95 wave raider with the 1100 engine. It is pre mixed and the carbs have just been rebuilt. I will idle well and it will rev to mid throttle then stop then it will take off and run wide open. If you let off then the whole process starts over. Any ideas


  2. #2
    Mpeavler's Avatar
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    Jeff,

    1. Did you also rebuild the fuel pump?
    2. Check your pulse line going to the pump.
    3. Fuel filter?
    4. I would check you fuel pick up in the tank to ensure it's clean and not collasped.
    5. Do you have the carb update kit on it? Year? Check the fuel return line to make sure that at the end of the carbs near electrical box that it has a small pin hole outlet..and not the larger hole.


    It still sounds fuel related...which means don't run it anymore like it is until you figure it out. Did you rebuild the carbs..?

    M

  3. #3
    Mpeavler's Avatar
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    ..o yeah....did you rebuild the carbs because of this reason....when did the problem start and what was your actions to fix it? I'm just trying to rule out anything else.

    M

  4. #4
    I rebuilt the carbs due to this reason, I have not had a chance to put it in the water since. I will check the pickup and replace the fuel filter. I was afraid that it might be a blown crank seal. I will keep trying. the ski is fun. much smaller and much easier to move than gpr1200

  5. #5
    no I did not rebuild the fuel pump. Has anyone tried electric pumps?

  6. #6
    jdog800's Avatar
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    running away is a classic sign of air leak. I would look at the crank seals. The one next to the coupler is known to be a weak spot. If you can take off the coupler shield and get a small mirror and flash light, this seal can be inspected.
    The only true way to tell is to pressure test the engine.

  7. #7
    speedskixp's Avatar
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    Quote Originally Posted by jdog800 View Post
    running away is a classic sign of air leak. I would look at the crank seals. The one next to the coupler is known to be a weak spot. If you can take off the coupler shield and get a small mirror and flash light, this seal can be inspected.
    The only true way to tell is to pressure test the engine.
    +1. This can also happen with freshly built carbs until they get fully primed with fuel. I guess this is not your problem though since you pulled the carbs to fix this problem.

  8. #8
    Mpeavler's Avatar
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    And or a slightly lean condtion along with the engine being hot. I often see folks at the ramp reving the engine with no water at all for an extended period....this is asking for a run away situation.

    M

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