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  1. #1
    retro's Avatar
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    Spark just as I let go of start switch

    I just installed an ignition update kit on my 99 slth twin. I am getting spark just as I let go of the start switch. I am not getting spark while cranking. Brand new stator, cdi, coil, spark plugs and battery is fully charged and I am getting 11.5 volts to cdi while cranking. I have tried holding the bilge button while cranking with the same result. All wires are hooked up as they should be. There is one grey wire that comes from the update cdi that has a spade connector that the wiring diagram says gets hooked up to the rpm limit on the electrical board. I dont have it hooked up because I dont know where it goes. Is there anything else I could check. Thanks


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    There are two gray wires on some domestic CDI.

    One gray wire connects to the stator. Make sure you are connecting the correct gray wire to the stator, which must always be connected.

    Looking at the wiring diagram, I do not think your 1999 SLTH has an RPM limiter (just the MFD warnings), so the second gray wire from your CDI (if you have a second gray wire) should just be taped off.

    Did your old CDI have a Tan wire, that connected with the other Tan wires on the terminal board? If yes, then the second gray wire (if you have a second gray wire) on the new CDI would connect to the Tan terminal.

    More troubleshooting info here.

  3. #3
    retro's Avatar
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    My old cdi did not have a tan wire connected to terminal board so I just taped off the grey wire. Is there anything thing else that would cause my no spark considering the electrical sysytem is brand new and battery is good and fully charged. Thanks

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by K447 View Post
    There are two gray wires on some domestic CDI.

    One gray wire connects to the stator.
    Make sure you are connecting the correct gray wire to the stator
    , which must always be connected....

    More troubleshooting info here.
    Quote Originally Posted by retro View Post
    ...Is there anything thing else that would cause my no spark considering the electrical system is brand new and battery is good and fully charged.
    Lanyard is in place - correct?

    Hold down the bilge button. Does the bilge pump run?

    If yes, continue to hold down the bilge button, and see if you now have spark.

  5. #5
    retro's Avatar
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    Lanyard is in place, I tried holding down the bilge button and am getting the same results.

  6. #6
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    I know there was a post on this already- some time ago as we had a Genesis doing the same thing. Cant remember now but try a search....

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by retro View Post
    Lanyard is in place,

    I tried holding down the bilge button and am getting the same results.
    Does the bilge pump run when you press the bilge button?

  8. #8
    Watcon's Avatar
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    The battery

    Hook it up to your car (with the engine not running) with jumper cables.. I bet it starts.. If it does, go buy a new battery! This test will not work with a battery charger, jump box, or another jet ski.

    The energy gets diverted to the starter motor first, and the CDI isn't energized until the millisecond between the time you let go of the starter button, and the inertia of the flywheel stops.

    Regards,
    Randy

  9. #9
    retro's Avatar
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    The bilge pump does run when the button is pressed. I also tried to jump start using jumper cables and my car battery with the same results. Anything else I could try.

  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by retro View Post
    ...I am getting 11.5 volts to cdi while cranking...
    You measured this voltage right at the Red/Purple and black wires that go into the CDI itself - correct?

    Disconnect the Black/Yellow wire that goes into the CDI. This is the engine kill switch connection to the CDI. If you now have spark, then check the stop switches and wiring.

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