650SC Fuel vent & return lines backwards
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  1. #1
    PWCToday Newbie
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    650SC Fuel vent & return lines backwards

    Took the SC out for its maiden voyage yesterday. Pull the throttle and it would go about 20 yards and die. Had to choke it to start back up. Seems like it was starving for fuel. Looking over things this morning and found the vent and return lines switched on the tank (previous owner never had it running, bought as a project). Before I drive back to the lake (in Illinois in November), does this sound like it would be the issue?

    Thanks

  2. #2
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 650SC Fuel vent & return lines backwards

    Doubt it, vent and return should both just be open at the top of the tank. It would still function normally. Sounds like fuel starvation. Corroded or broken pickup tube. Pull the fuel pickup out of the tank and have a look.
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  3. #3
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    Re: 650SC Fuel vent & return lines backwards

    Tubes and filters looked good. I might swap the carb off my 650sx quick....142B0970-2875-4E87-8B5D-AB4F8594688D.jpeg

  4. #4
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    Re: 650SC Fuel vent & return lines backwards

    Sounds like the filter in the carb may be stopped up to me
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    hated on by most these &^$$@s with no cheese, no deals and no G's, no wheels and no keys, no boats, no snowmobiles, and no skis, mad at me cause I can finally afford to provide my family with groceries

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  5. #5
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    Re: 650SC Fuel vent & return lines backwards

    Filter in the carb was clean. Popped it off and nothing in it. Carb off the 650sx is much smaller, so bailed on that plan...lol

    A6CC0F58-99F6-4F67-B777-2BC1D41155B6.jpeg
    Last edited by P-Money; 11-08-2020 at 01:52 PM.

  6. #6
    PWCToday.com Is My Home Away From Home Myself's Avatar
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    Re: 650SC Fuel vent & return lines backwards

    Quote Originally Posted by P-Money View Post
    Tubes and filters looked good. I might swap the carb off my 650sx quick....142B0970-2875-4E87-8B5D-AB4F8594688D.jpeg
    You have to plug the filter ends, then submerse in a bucket of water, ten blow into them and watch for bubbles.
    http://www.facebook.com/twinlakesjetskirepair

    '89 Kawi 650SX 42.4 GPS
    +3" stock pipe, ported ex. manifold, drilled waterbox, blueprinted pump, Ocean Pro ride plate

    '99 Yama GP1200 65U 61.8 GPS
    ported cylinders, matched cases, milled head, blueprinted pump, long ride plate

    '96 Seadoo HX 717 53.13 GPS
    light porting, massaged cases, lightened flywheel, port matched manifolds, Rossier pipe, stubby pump cone

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