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  1. #1

    Angry 2008 Ultra 250x running sick (coughing,miss firing and cuttng out) ??? Help

    I just bought a used 2008 model 250x ultra jetski .It has 24hrs on it. It was winterised and has sit for 12 months. I finally charged the battery ,fired her up and went out for a spin.

    It seems to fire up and idle ok but when I go to take off, it sounds sick,hesitates and does not want to rev out. It also dies sometimes if it goes to take off?

    Where should I start to look to sort out this problem? Should I buy and fit a new set of spark plugs?

    I appreciate any help with this problem. thanks Jason


  2. #2
    nicjak's Avatar
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    start with plugs but check the s/c is spinning

  3. #3
    www.eastcoastpwc.net Scott's Avatar
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    Also check the air intake horn is not sucking to the hull. Open the front hatch, remove the bucket, remove the access panel, remove the ecu and look to your left. Looks like this.


  4. #4
    2005 RXT Red08Ultra250's Avatar
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    I would take out all the old fuel, and change plugs. Put antisieze on new plugs and dont overtighten.

  5. #5
    ok, I will check the horn position today,dump the fuel and buy some new plugs. Which plugs should I buy?

  6. #6
    Offshore Aussie's Avatar
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    Don't forget the S/C, as Nicjak said. Loosen the belt tensioner pulley, and see if the charger will spin freely by hand.

  7. #7
    yes I will check that as well

  8. #8
    Robba's Avatar
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    Sounds like a seized S/C and highly probable considering the 12 month storage period.

    Robba.

  9. #9
    Is there a real simply way to see if the S/C is spinning ok without un-doing belt adjustments,etc? can I just fire it up and see that the S/C is spinning?

  10. #10
    nicjak's Avatar
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    that would be one way
    Quote Originally Posted by jasonblown540 View Post
    Is there a real simply way to see if the S/C is spinning ok without un-doing belt adjustments,etc? can I just fire it up and see that the S/C is spinning?

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