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  1. #1
    4ringturncoat's Avatar
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    02 XPL runs great and then starts to slow down, help!

    I put a prop 15/20 Condord and am going to add the rest of ben's parts but with a vacation this week I could not get the rest done.

    Here is the problem, the ski starts great, runs great, gets out of the hole well but after about 10 minutes of running it looses rpms. When it is cool it will run about 6800 rpm and about 62 on the speedo but after running a while it drops to 6400rpm and speed drops about 6 mph.

    Here is what I have checked:
    Water flow in and out of engine
    new plugs (old ones looked good wiht good color)
    all rave valves
    all exhaust fittings and couplers
    ran the tank out and made sure I had good gas
    fuel filter, all but the ones in the carb
    has had fuel lines changed out a while ago


  2. #2
    96XPSS's Avatar
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    I think you have a RAVE valve sticking.

    Have you pulled your spark plugs to confirm it's not lean when you start losing rpms?

  3. #3
    4ringturncoat's Avatar
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    Quote Originally Posted by 96XPSS View Post
    I think you have a RAVE valve sticking.


    Have you pulled your spark plugs to confirm it's not lean when you start losing rpms?
    It does look a touch lean but the plugs still have good color at the base, a light tan to almost biege color. I am going to try to get the main needles today to turn them out a touch.

    Rave valves are nice and free, I will take the springs out and run it to see if that helps.

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