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  1. #1

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    Flames inside intake pipe

    If i look from above of the carb through the carb hole (pto/back cilinder) i can see short flames from time to time at the botom of the hole, mostly when accelerating, is it normal ? or what is wrong ?


    thnx alot

    ps. I hope i gaved a correct name to the topic, if not please mods correct it

    edit: ski is a 1995 Polaris SL 750


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    What ski are you asking about?

    Visable flames is not normal, and very dangerous!!!! If you have gas fumes built up inside the hull and that flame comes out, your going to have an explosion and be shot in to the air like an ejection seat.

    Most likely timing is off. Do a crank index test to verify the crank is fine.

  3. #3

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    sorry i forgot ski model, it is also in my profile, 1995 Polaris SL 750

  4. #4
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    It may also be damaged reeds. But you need to address this before you ride any more for safety sake.

  5. #5
    bowsniper's Avatar
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    Whats wrong? The boomb hasn't ignited yet. Stay off it until remedied. Could blow up. I wouldnt want 10 gallons of gas on me on fire. Yikes.
    Wait for others to chime in on this problem. Iv'e never seen or heard of this , so I'm out.... Be careful!.

  6. #6

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    Smile

    ok, i understand, i wont ride it untill i'll fix it, anyway summer is finished here, repairing seasons started

    i know its easy to find here, i saw it few times, but if you have it in handy i would love to have a link to crank index testing

    with what's wrong i ment, where is the problem? where to start fixing ?
    funny missunderstanding ), sry for my english

    thnx alot

  7. #7
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Post #2 is the real way to do it.

    http://www.greenhulk.net/forums/showthread.php?t=15436

    The "redneck" way would be to get the CEN piston at true TDC. (a dial indicator will be needed) Then hold it there. The flywheel magnets will want to normally pull the crank one way or another.

    Then put something like the eraser end of a pencil down the MAG plug hole and mark the pencil. Do the same for the PTO cyl and compare the 2 marks.

    Should be exactly the same, or within 1 - 1.5mm of each other.

  8. #8

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    jet ski just waited for repair, didn't ride it since last post (2009), so, i took the engine out of jet ski and opened it up..

    seems that i also have a hole in pto, (pictures attached)
    i cant seem to find the melted metal , where did it go ? does it just evaporates or should i search for it more ?

    center piston seems ok,

    front also have some kind of "raised edge" ?, seems not ok, should i change that too?

    i remember testing compression back in 2009 when stopped using it and it was generally low, under 110, even under 100 if i remember well, so putting new piston rings should be a good idea also

    index seem ok, reeds seem ok...
    edit: original picture resolution is 13mp, as forum resize a lot, let me know if full resolution is needed as i can upload/send separately
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    Last edited by townkat; 09-06-2015 at 02:49 PM.

  9. #9

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    another problem, i can't seem to be able take the two parts of the pump apart, (picture attached)

    any tips on how to separate them without destroying anything ?
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  10. #10

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    anyone knows what material is this steering part made of (picture atached)?, aluminum or cast iron ? as i am thinking to weld it..
    the part was really stuck on the shaft, i worked really hard to get it off but unfortunately i broke that handle
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