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  1. #1

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    SOS... Need Help... GPR1300 Only 5600 RPM @ WOT (Gurus Unite)

    Hello everyone, I'm having issues with my 107 Hours GPR1300, been trying to figure this out with a local fellow member from this forum. To make long story short, ski been apart and put back together without rectifying the issue due to being unable to pin point source of the problem.

    Ski idles poor and rough @ about 900 RPM and sometimes even shut off due to not being able to keep up with low RPM
    Has some haul shot present still, medium range and even top end but you can just feel something is wrong, I can only get 5600-5700 out of it right now and when i try to idle at 3500 RPM I get some backfire and not sure if thats due to having
    free flow exhast...


    I will update shortly a list of all the mods I have on this ski, and here is the list of area that been inspected and looked at...


    Hooked up computer and no codes besides exception of one of the coils behind the flywheel fault in memory but again that didn't make any sense as of yet.

    Disconnected R&D computer to bypass and rule that out

    Checked intake reeds without noticing any damage

    Took manifold off checked injectors and all three spray fine

    Checked compression and all three cylinders in spec just one slightly off than others

    Checked exhaust power valves all clips are in place


  2. #2
    silvercrxsir's Avatar
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    Are the powervalves open and closing

  3. #3
    Julian's Avatar
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    Oct 2011
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    Groningen, Groningen, Netherlands
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    Check fuel delivery, clean filters, take the flapper out of the tank

  4. #4
    Julian's Avatar
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    Groningen, Groningen, Netherlands
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  5. #5
    Moderator OsideBill's Avatar
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    ther is no flapper in your tank. The 1300's have the submerged fuel pump with filter on the end of it.

  6. #6

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    Yes power valves open and close

  7. #7

    Join Date
    May 2008
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    USA - CANADA
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    Thanks Julian for the link... And OsideBill you are right about not having a flapper in the 1300's
    I will try to drain the tank and look into this matter cause not being able to find the problem is driving me crazy...

  8. #8
    Yamaha artisan Cutlass's Avatar
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    Quote Originally Posted by klze View Post
    Hooked up computer and no codes besides exception of one of the coils behind the flywheel fault in memory but again that didn't make any sense as of yet.
    What fault code number was it?

  9. #9
    philip_gpr's Avatar
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    13 pick up coil

  10. #10
    Yamaha artisan Cutlass's Avatar
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    I would think the ski wouldn't run if the pick-up coil was bad. Maybe the pickup coil isn't completely dead and thats causing the rough idle and low WOT rpm. Have you guys tested it or visually inspected it for a loose or corroded connection?

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