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  1. #21

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    Got all the gas out safely. Started rough but ran well after a few minutes. I will get into the carbs when I get time, probably in a couple weeks. Thanks to all for your help, suggestions, and advice.

  2. #22

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    One more question guys...since the ski ran well after I got all the gas removed can I assume that the leak into the crankcase was not via the fuel pump diaphragm but rather through one of the carburetor's needle/seat??..

  3. #23

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    Quote Originally Posted by Mockingee View Post
    I would think if you take the plug out of the flywheel cover and turn the engine a bit you should be able to tell if there's fuel in there. If there's only a bit I would think the flywheel would be wet on the bottom.

    No gas in the flywheel/Stator...Yes!

  4. #24
    Myself's Avatar
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    Probably a bad needle tip, maybe a faulty gas tank vent not relieving pressure too.

  5. #25

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    Carbs are coming off next week to rebuild, will check the popoff then.

  6. #26

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    Quote Originally Posted by Myself View Post
    Probably a bad needle tip, maybe a faulty gas tank vent not relieving pressure too.

    I checked for a large "swoosh" of air last time I opened the fuel cap, it was no more than the usual "pffft" sound...

  7. #27

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    Finishing up on this post, just opened up the carbs and all three had defective needle tip, specifically the viton tip had a deep Groove in each....
    Thanks to all of you for your help... will not be able to water test for a couple weeks but I'm sure I have found the problem, see the attached pictureClick image for larger version. 

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  8. #28

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    So the 780 did run very well with no fuel leaking into the engine after the Carb rebuilds. Then my kid flipped it and ruined the MFD(it got soaked), then after sitting for 2 weeks the fuel water separator contains air when running the ski and I can only achieve 4700-5300 rpm. I have started troubleshooting those issues on other threads here on the Hulk. I do not know what I would do without the help of all of you here...Thanks again everyone!!
    Quote Originally Posted by waterpest View Post
    Finishing up on this post, just opened up the carbs and all three had defective needle tip, specifically the viton tip had a deep Groove in each....
    Thanks to all of you for your help... will not be able to water test for a couple weeks but I'm sure I have found the problem, see the attached picture


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