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Thread: 750 x2 help

  1. #51
    PWCToday Guru Bob Gruen's Avatar
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    Re: 750 x2 help

    Are you sure you do not have any exhaust leaks?

    Did you ever put a new check valve on the tank? You can usually get a Yami check valve from ebay for 1/2 the price of a Kawi. Your tank should hold pressure, if you run the engine for a minute or so and unscrew the fuel filler it should burp.

  2. #52
    PWCToday.com Is My Home Away From Home Rushford_Ripper's Avatar
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    Re: 750 x2 help

    Did you try turning the high speed screw in to only 1 turn out or half turn out?


  3. #53
    PWCToday Regular dsweeney18's Avatar
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    Re: 750 x2 help

    I've tried all sorts of setting on the carb and yes I'm positive there is no exhaust leak I have triple checked.

  4. #54
    PWCToday Guru Bob Gruen's Avatar
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    Re: 750 x2 help

    Check valve on the tank? Is the tank building and holding pressure?

  5. #55
    PWCToday Regular dsweeney18's Avatar
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    Re: 750 x2 help

    Quote Originally Posted by Bob Gruen View Post
    Check valve on the tank? Is the tank building and holding pressure?
    Yes the valve in the tank is fine

  6. #56
    PWCToday Guru Bob Gruen's Avatar
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    Re: 750 x2 help

    Plug wires go bad and can act up under an increasing load. If both carb configs behave the exact same way I'd suspect ignition. Maybe one lead is dropping out, which would be easy to spot on the spark plugs if you chop it while the problem is happening.

    But, for a last sanity check I would run it on a trailer or tied to a dock. Remove the flame arrester, and watch the throat of the carb as you pull the throttle and the upper circuit kicks in. If you see a flood of fuel come out of the bomb sight, or no fuel at all, then it is a carb problem.

    Bob

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