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  1. #1
    lxman88's Avatar
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    sl 650 stall problem

    its a 94 sl 650 bone stock except extended pump and stuff but the ski will run fine and all a sudden stall out and die then you have to choke it and then it will run fine for a few mins and do the same thing i took the tanks out it had some trash in it i cleaned it out have yet to ride it agin but i dont think that was the causes of the problem since it has a clean fuel filter. it has like 118lbs comprssion on all three cylinders is that ok numbers?


  2. #2
    She likes the bike. But the ski gets her wet!!!! xlint89's Avatar
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    Compression is fine.

    Have you done any of the recommended fuel system rebuild/upgrades?

    Does your ski still have the autocock installed? If so, ditch it!!!!!

    Make sure to inspect the petcock for obstructions.

    Can you hold your hand on the cyl heads for a few seconds when it does this?

    Try unscrewing your gas cap when it acts up and see if that helps.

  3. #3
    lxman88's Avatar
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    what is the autocock and the petcock ive never even heared that term befor im very good with tools if you could explain more i can find and take it out and check whatever the petcock is lol. ive only had it for 3 months but i have replaced all the fuel lines with clear fuel hose and i washed the tank out today when it did that and got all the trash out ive yet to take it back out and try agin. and i didnt try and put my hand on the cyl heads what would i be looking for? it pumps water as i took the flush caps off today i thought i may be over heating but thats not the case it shoots a strem of water out it you unscrew the flush cap.

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Petcock = Fuel Selector valve

    Auto-cock removal info should be findable using Search.

    Engine temperature should never be so hot that you cannot hold your hand on the engine for a few seconds.

    Cylinder heads and exhaust manifold are all water jacketed, so they should not get super hot. Around 140F is normal.

  5. #5
    lxman88's Avatar
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    o yea the cyl heads were not hot enough to burn my hand i make sure every time its pumping water and cooling befor i ride. but i cant find what a auto cock looks like or where it is to see if i have one and the fuel valve works fine

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Arrow Remove auto-cock device from all 1993-1994 Fuji engines; SL650, SL750, SLT750

    Quote Originally Posted by lxman88 View Post
    ...I can't find what a auto cock looks like or where it is to see if i have one...
    Auto-cock is circled in Red in the attached photo.

    It is next to the fuel pump in this diagram, connected to hose 14.

    Remove both the auto-cock and the vacuum hose to the carburetor, then cap off the nipple the hose was connected to.

    Use a nipple cap that is rated for exposure to gasoline. You can use vacuum nipple caps meant for automobiles.

    Hose 7 then connects straight to the fuel pump.



    Auto-cock is item 4 in this diagram

    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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  7. #7
    thester71's Avatar
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    Check your fuel tank vent!

  8. #8
    lxman88's Avatar
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    na my ski dont have one of those on i guess it been removed already

  9. #9
    lxman88's Avatar
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    is the autocock pules line right next to the fuel pump pulse line? i havent removed the carbs yet but i can feel there is a little nippel sticking out and its not caped off or anything if you standing on the right side of the ski lookin down at the carbs its to the right of the fuel pump pulse line

  10. #10
    lxman88's Avatar
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