03 Supejet too rich
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  1. #1
    PWCToday Newbie MadMax45186's Avatar
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    03 Supejet too rich

    Can someone help explain how to adjust lean/rich mixture on the stock carbs? My ski is running ok, not fouling plugs completely, but they are showing signs of excessive carbon build up after only a few hours of riding.

  2. #2
    PWCToday.com Is My Home Away From Home ZMANN's Avatar
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    Re: 03 Supejet too rich

    go to the tech section on this site and find the mikuni tuning manual remember if you mess this up you can burn a piston

    piston wash is what I prefer to look at
    http://www.pwctoday.com/image.php?type=sigpic&userid=15348&dateline=1238301767

  3. #3
    PWCToday Newbie MadMax45186's Avatar
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    Re: 03 Supejet too rich

    thanks for the info. the ski is probably running just fine, seeing as there are no other obvious problems. I'm hoping a new fuel filter will help reduce some of the carbon build up on the spark plugs. I'll try to get a second opinion from other skilled riders in the area if the problem persists.

  4. #4
    PWCToday.com Is My Home Away From Home ZMANN's Avatar
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    Re: 03 Supejet too rich

    what oil do u use?
    http://www.pwctoday.com/image.php?type=sigpic&userid=15348&dateline=1238301767

  5. #5
    PWCToday Newbie MadMax45186's Avatar
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    Re: 03 Supejet too rich

    currently penzoil tc-w3.

    I'd like to switch to the lucas land/sea 2-stroke oil to see if it helps the plugs stay clean.
    http://www.lucasoil.com/products/dis...iid=13&catid=6

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