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  1. #1
    polarisitis's Avatar
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    SL650 cracked gas cap.....pressure loss?

    Hey guys, does anyone think that a cracked inner cap (the one on top of the tank where the lines run thru) would cause the ski to run rough and lose power due to fuel pressure loss or something? I am wondering if it's just a coincidence that I just happened to notice the cap was in two pieces right about the time it started running rough and losing power, idling erratically, or if I might have something else going on. Just replaced the engine (only about 15 hours on it), triple outlet pump & newer carbs and was running like a champ. Got a new outlet cap on the way but wondering if anyone else has had a cracked cap cause similar problems...thanks in advance!


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Could there be water inside the fuel tank from the tank not being sealed?

    Any dirt or gunk inside the bottom of the tank?

    Has the fuel system been gone through and cleaned up?

    Hoses inside the fuel tank? Condition of those hoses?

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  4. #3
    polarisitis's Avatar
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    Ooh that's a good thought, I didn't think about water getting in there but that is a possibility...I'll check that tomorrow and drain it completely to be safe. I haven't yet upgraded to new fuel lines yet as I have been putting that off. It sounds from reading posts here that the original lines on these skis are a real problem and seeing how mine are 20 yrs old I better replace those STAT as they don't look great. Where have you guys been getting the blue lines I keep reading about?

  5. #4
    burtonrider10022's Avatar
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    This site was posted in a different thread: http://fuel-line.net/

  6. #5
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by burtonrider10022 View Post
    This site was posted in a different thread: http://fuel-line.net/
    FAST FLOW FUEL LINES

    Hmmm. A while back there was questions regarding the quality/longevity of these fuel hoses. What is the current consensus on this source?

    Just asking as I don't know whether anything has changed.

  7. #6

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    these ??
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  8. #7
    polarisitis's Avatar
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    Yes! The metal one in the top pic is exactly what I need, thanks for the pics Bob!

  9. #8
    This is how I run a jetski shop in the desert nmpeter's Avatar
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    if you are replacing fuel lines, I'd strongly advise using Shields A1 rated marine line. The very last fuel line you will have to ever buy. Not as fun or easy to work with then the colored transparent lines, but when it comes to safety, accept nothing less then fuel line with the A1 rating.

    it's available from a number of vendors in 25 foot spools for around $2-3 foot retail.

    A1 has best rating for abrasion resistance and are ethanol rated.

    Otiker 13.3 clamps work perfect with this line at full compression.Not using otkier clamps on your fuel system?

    personally I am not comfortable(nor is my insurance company) with a screw hose clamp or zip ties assuring gas stays where it's supposed too inside an enclosed space with no bilge blower in 100degree + heat.

    if you have to use zip ties, check them now and then for brittleness

  10. #9
    Click avatar for tech links/info, donation request K447's Avatar
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  11. #10
    polarisitis's Avatar
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    I will check into the A1 lines and the Oetiker clamps....right now I just have old style screw clamps I put on after installing the triple pump...found out the hard way I screwed one way too tight after the line split and sprayed gas all over the inside of the hull, glad I caught that one quick!

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