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Yamaha 2000-GP1200: HELP!!!

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  • #16
    Re: Yamaha 2000-GP1200: HELP!!!

    All 3 plugs not sparking...CDI?

    What are referring to with "block"

    I tested the plugs on the twin ski I have and they sparked fine...

    but on my ski with the new motor it turns over but no spark to start it up.

    What should I look for?
    Last edited by cwehse; 03-21-2005, 12:12 AM.

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    • #17
      Re: Yamaha 2000-GP1200: HELP!!!

      Umm...I wasn't blaming the block, I was searching for help in troubleshooting.

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      • #18
        Re: Yamaha 2000-GP1200: HELP!!!

        I already gave you a list of things to check.
        SBT Tech Support is here to help with your problems.
        We try to answer each question quickly and accurately.
        Please do not use Private Messaging for Tech Support, use the forums.

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        • #19
          Re: Yamaha 2000-GP1200: HELP!!!

          battery voltage = 12.7

          connections = everything looks good

          cables = look good

          plug wires = not sure how to check, doubt all 3 would simultaneosly go bad

          new plugs = tried new plugs in it, tried the plugs from the no firing ski into my other and they sparked...

          What else would you suggest?

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          • #20
            Re: Yamaha 2000-GP1200: HELP!!!

            I would suggest a new battery first. 12.7 is low. Swap with your other ski real quick. Ignitions turn off when voltage is low.
            SBT Tech Support is here to help with your problems.
            We try to answer each question quickly and accurately.
            Please do not use Private Messaging for Tech Support, use the forums.

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            • #21
              Re: Yamaha 2000-GP1200: HELP!!!

              Ok, will try and let you know.Thanks.

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              • #22
                Re: Yamaha 2000-GP1200: HELP!!!

                Ok...troubleshooting...pulled the engine out, took off flywheel cover. I found that the woodruff key had apparently pushed out when I was orginally installing the flywheel...I'm assuming this messing up the timing led to no spark? It certainly can't be good.

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                • #23
                  Re: Yamaha 2000-GP1200: HELP!!!

                  Pushed out as in not there?



                  Keys don't do a thing except line up the flywheel for installation. You don't even need one.


                  If you had any shearing movement it was from the flywheel itself spinning. Ususally due to improper installation such as debris on the taper or not correctly torquing the bolt.
                  SBT Tech Support is here to help with your problems.
                  We try to answer each question quickly and accurately.
                  Please do not use Private Messaging for Tech Support, use the forums.

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                  • #24
                    Re: Yamaha 2000-GP1200: HELP!!!

                    No, it was present, stuck to the inside of the flywheel. Ok, so you think is wasn't torqued down enough? Would that cause no spark?

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                    • #25
                      Re: Yamaha 2000-GP1200: HELP!!!

                      That means you didn't line it up properly, pushed it out the back when you put the flywheel on, and also failed to torque the bolt properly if the flywheel spun. Also check the pickup and stator for debris - it must be perfectly clean.
                      SBT Tech Support is here to help with your problems.
                      We try to answer each question quickly and accurately.
                      Please do not use Private Messaging for Tech Support, use the forums.

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                      • #26
                        Re: Yamaha 2000-GP1200: HELP!!!

                        i personally use a small dab loc tite to hold key in place. wipe clean check for burs, carefully slide back on as sometimes the magnatism will work against you. if its still in the boat i will check with a mirror to see if its still there. or use a small piece of wire like a paper clip. slide it up the keyway on the flywheel it should stop when it touches your woodruf key. if not it rolled up and out when the flywheel went on.flywheel can rotate on taper while tightning nut. messing up your timing. once seated and torqued tapers hold tight. sorry you had troubles. good luck.

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                        • #27
                          Re: Yamaha 2000-GP1200: HELP!!!

                          Also inspect the crank seal behing the flywheel and make sure when it pushed out it didn't dig into the seal.
                          Providing mobile JetSki service to the Charlotte / Lake Wylie area.

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                          • #28
                            Re: Yamaha 2000-GP1200: HELP!!!

                            Will do guys, thanks so much, I'll let you know what happens.

                            Even though the indentations where the key should be are lined up it still probably slipped? To me, if they're still lined up...it suggests that the loose key messed with the coils? Even though I saw no visible damage.

                            Definitely a bummer...something so small in the beginning of the install leading to breaking it back down.
                            Attached Files
                            Last edited by cwehse; 03-22-2005, 11:31 AM.

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                            • #29
                              Re: Yamaha 2000-GP1200: HELP!!!

                              Ok...Found that I didn't notice the old woodruff key on the inside of the flywheel when installing...it did not actually come loose, I did use the one that came with the new motor and it was in place and everything was torqued down fine. SO, visibly there was nothing wrong with the internals of the flywheel area (stator, coil, etc.). I removed the second key (which was intact and didn't appear to have chipped off into there) Re-assembled, and tested, still no spark...The only thing I could find in the Yami svc manual for the stator any coil was instructions for measuring the ohms for the "lighting coil" I think I know what two green wires it's referring to, am I supposed to open the CDI or the flywheel to get contact? Or perhaps I should be troubleshooting some other way??? Very frustrating.

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                              • #30
                                Re: Yamaha 2000-GP1200: HELP!!!

                                seems to me old key must have nicked stator and damaged it. I know a guy that might have a used one Joe 727-488-5353.....He might have a CDI also.....He is in Seminole.

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