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  1. #1

    sl650 hard to start/idle when warm

    after riding for about 1/2 an hour or more, it can be rather difficult to restart my sl650 and keep it idling without giving some throttle. when this happens, the ski losses throttle response and power.

    if i let it sit for an hour, the power and throttle response is back to normal.


    any ideas?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    When the problem next happens, try opening and re-closing the fuel cap.

    If this fixes the problem right away, then you need to figure out what part of the fuel system is not working properly.

    It may be a fuel tank vent that has stuck shut, creating a vacuum in the fuel tank.

  3. #3
    Quote Originally Posted by K447 View Post
    When the problem next happens, try opening and re-closing the fuel cap.

    If this fixes the problem right away, then you need to figure out what part of the fuel system is not working properly.

    It may be a fuel tank vent that has stuck shut, creating a vacuum in the fuel tank.

    forgot to add:

    its usually after subs, hard riding, capsizing or nearly capsizing from hard riding/playing. i have an electric bilge and there is no way the water level inside the sl get anywhere near the carbs.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by navx View Post
    ...its usually after subs, hard riding, capsizing or nearly capsizing from hard riding/playing.
    I have an electric bilge and there is no way the water level inside the SL get anywhere near the carbs.
    Is the cover in place over the drive shaft coupler?

    When water is flying around inside the hull, it can get everywhere, even if the water level is not high.

    Might be electrical, if water is soaking into somewhere it shouldn't be. Is the electrical box properly sealed, and dry inside?

    Ignition wires and plug boots in good shape, clean, sealed around the wires?
    Nyogel grease inside the plug boots?

    Spark plug insulators clean (or put new plugs in).

    Has the fuel system been updated?
    New fuel lines (including inside the tank), new filter, fuel pump rebuild?

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