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  1. #1

    Polaris sl900 not accelerating once getting hot

    Once i start this one up it accelerates thru low and mid range. High range is okay. Once it get's hot it does not have low or mid range. If you hit a wave and get air into pump then it will accelerate to high range. Have checked carborators and fuel. This jet ski had been sitting for 7 years without use. Have cleaned out the fuel system.

    Have any idea what is going on here? thanks.

  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
    Join Date
    Jul 2007
    near Toronto, Canada

    Have the carbs actually been pulled apart, internally cleaned, and new rebuild parts installed?

  3. #3
    Yes they have..

  4. #4
    casey67's Avatar
    Join Date
    Sep 2006
    Have you treid to add a little choke when the problem happens ? (If it is lean,choke will add some gas)

    Or,check the plugs when the problem happens. When it doesn't accell,hold throttle steady,hit the kill button. ( better to read older plugs,they change color quickly)

  5. #5
    have tried to choke no difference this ski has keihin cdkll carbs. It only has one adjustment screw on the carb. Also checked the plugs and changed their tan color. I do not live close to the lake so once i get the ski's on the water again i can get back to you.

  6. #6
    When I drive the ski it seems to engage the first and second stage of the carbs just fine but the third stage will not engage until a certain RPM (over 2400). If I keep the ski over this RPM then the third stage will stay engaged but if I drop below this RPM then I have to build back up the RPM's to get it back in the third stage. I have gone through the carbs and cleaned them. They KEIHIN CDK2s and only have one adjustment screw which I have adjusted very minutely. We have taken it back to closed and then turned it out 5/8 like the dealer recommended. Its seems to have a very small sweet spot but once you ride the ski around for a while it loses it.

    Has anyone else experienced this problem?

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