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  1. #1
    scorp's Avatar
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    SL900 Heats up and dies

    Quick history- rebuilt engine installed new parts -electrical is all original-
    runs great for about an hour,very strong very fast no issues,then starts
    loosing power rpms drop to 3000-3500 need to start feathering throttle
    to keep it going then finally dies,wont start. I let it sit for 5 min then it
    starts right up. So after reading the tech section it looks like its time for an update kit, My question is should i send stator out for rebuild or buy new(whats the cost diff.?) do they do a good job rebuilding(reliable).
    Am I on the right track,or do you guys think it's something else?
    Thanks in advance,
    Steve


  2. #2
    ph2ocraft's Avatar
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    Steve, you could be seizing the engine.
    I'd pull the domes and see if you have some scored cylinders.
    What's compression on all cylinders right now?
    Check for blockage in the cooling system, pat particular attention to the screen in the pump and the orifice in the pipe.
    Is the hose that goes between the exhaust pipe and water box very soft?

  3. #3
    scorp's Avatar
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    Thanks for the quick response ph2ocraft,
    Cooling system is fine all is clear,hoses are not soft,by the way I don't
    get any warning on the mfd of over heating, I mentioned that because
    it seems to me that after riding for an hour the engine would be hot and
    thats when the symtoms occur. I did compression test #1=130,#2=130,
    #3=125. I'll pull domes to check for scoring, Is there something else that
    would cause this?

  4. #4
    ph2ocraft's Avatar
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    Don't pull the domes just yet.

  5. #5
    Moderator beerdart's Avatar
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    Can you ohm the stator next time it gets hot? Ohm it cold them ohm it hot and compare readings. Just a thought.

  6. #6
    ph2ocraft's Avatar
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    With that compression, I doubt it's internal engine.

    I'd be looking towards the fuel tank venting system, if it idles/runs well.

  7. #7
    scorp's Avatar
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    Will Do beerdart,
    But it may be a few days before its warm enough to ride.

  8. #8
    scorp's Avatar
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    Yes Idles/runs great
    where/what part of fuel tank?

  9. #9
    ph2ocraft's Avatar
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    #10
    A couple of thing to try, remove the vent valve (for testing only)
    If it has reserve, did you try reserve when it acted up?
    Have you started putting any blankets, vests etc. in the tray that might impair the air intake?
    Did you remove or at least open the seat when you lost power?
    Was there more than a "normal" amount of water in the hull?
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    Last edited by ph2ocraft; 03-30-2007 at 06:05 PM.

  10. #10
    scorp's Avatar
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    If there is a blocked vent,can I clean it out by putting a air hose to it?
    (after I remove it from the ski of course) or will this damage something?

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