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  1. #1

    2014 Kawasaki STX 15f bad water box causing vapor lock?

    My 2014 Kawasaki Stx 15f starts up fine; runs great; however it will stall; when it stalls it wont turn over; like its vapor locked; while in the water; I remove a plug (any plug works) and it will start right up. I suspect that the water box is filling with water and the battery simply does not have the power to force the water out and turn the crank; like a vapor lock; no water is in the cylinders; and the oil is great; I see that the waterbox is $700; any thoughts?
    Thanks!


  2. #2
    Pain is fear leaving your body.... rlovebk's Avatar
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    Usually a sign of weak battery. I have never seen a water box go bad. There is no sign of water intrusion correct? (milky oil, wet rusty plugs, etc)

  3. #3
    Let me out of here......I need to go on Greenhulk!
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    You are not finding signs of water on any of the plugs?

  4. #4
    steve45's Avatar
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    The battery doesn't have to force water from the water box for the engine to crank, if that's what you're saying.

    Are you sure the engine isn't seizing?

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  6. #5
    No sign of water intrusion; no water when started without plug; oil is fine;
    After its stalls it doesnt even click; its like its ceased; pulled plug out; started right up; turned off; put plug back in; wont turn over; pulled plug again and started right up; replaced plug while running. Very confused.

  7. #6
    When its stalls and wont restart; there is no noise; clicking or other; and when the pull was removed (on the water) it started right up (normal); then I turned it off; replaced plug; wont start; nothing again; pulled plug; started and replaced plug while engine running; ran fine home (45min). Very confusing

  8. #7
    steve45's Avatar
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    How long will it run before it stalls?

  9. #8
    At least a half hour to hour; runs great (aside from this issue).

  10. #9
    steve45's Avatar
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    I'd be looking at the battery and cables. Loose ground or something like that would cause it to die randomly and not start. Could be a defective battery, too.

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