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1995 Seadoo XP800 no Spark

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  • 1995 Seadoo XP800 no Spark

    First, I would like to thank in advance anyone who replies to this cry for help. I read many of the previous threads on this topic and the info has been extremely helpful. My only problem is I tried just about all fixes and still have no spark.

    Second, the history of the ski- I just puchased it a few weeks ago from a Harley dealer that was going out of business here. Believe it or not this machine has never been titled or registered. Furthermore, it hasn't been started in the least two years. However it is far from being in great shape. When I bought it I installed a freshly charged battery and pushed the start button and the lights would light up and the trim would work. I could turn the motor over by arching the starter relay. The motor compression is 160 and 160. So I diagnosed it as being the DESS key not programmed to the MPEM. I took it to a local dealer and bought a new key and had it programmed. Now it turns over, but no spark. There was two ground screws loose and the plug to the stator and pick up was disconnected. I took care of those and made a new connection on the small ground wire in the rear box to the battery. The fuses are good. I also inspected and cleaned all connections, Still no spark. Now I took off the cover to the stator and pick-up. Everything looks real good.

    Third, this is driving me nuts. I was up till 1:00am on Christmas Eve trying to fix this thing. Any guidance or input would be greatly appreciated. I am allergic to the dealers in this area.

  • #2
    Re: 1995 Seadoo XP800 no Spark

    how are you checking for spark ?

    have you pulled the boots off the sparkplug wires and sniped the wires back a little to show fresh wire ? then hold both wires close to the block and crank the motor witout the plugs in . if you do that and still have no spark then make sure the small ground wire is good and connected to the battery . if all is good there try unpluging your recifire see if that helps . if not your module could be bad . if you have a friend who has a 95 xp800 or 96xp or 96 gsx you can try his box its a easy swap . { not the mpem } but the spark box its sep for those years .
    PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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    • #3
      Re: 1995 Seadoo XP800 no Spark

      Thanks 1fastski for the fast response. I performed the rectifier test. (unplugged the red wire-tried it, then unplugged yellow wires and the red) Also tripled checked that small ground wire in the back and ran a jumper. Still no spark. The spark plug wires are good. (trimmed to bare wire) Is there a test for the Nippondenso CDI and the coil that can be performed with a multimeter? I do not know any one who has that jet ski. I am still a little concerned with the MPEM. What info does it send to the CDI? The jet ski sat for a couple of years discharged. I had to get the DESS reprogrammed. Is there spark related info in the MPEM? I know that it comes from the CDI but under certain conditions will the MPEM not let the CDI work? I want to understand that circuit fully before I have to take it to a dealer.

      I am stabbing at anything right now. I don't want to go out and just start replacing expensive parts. I have done that to many times just to find out it was something simple.

      I really appreciate the help.

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      • #4
        Re: 1995 Seadoo XP800 no Spark

        Propably the pickup unit that is inside the magneto area. Very common problem on 95 xp800's and 96 xp's.

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        • #5
          Re: 1995 Seadoo XP800 no Spark

          Thanks for the thought XPSTEVE. I opened the mag housing and checked the pick up with an ohm meter. I had a value around 230. I figured as long as it wasn't totally open or shorted it was OK. It looked real clean inside. And I traced the wires to where they ternimate and got the same value. This thing is still driving me nuts. Wish I was working on 1989 650SX. That was a simple ignition.

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          • #6
            Re: 1995 Seadoo XP800 no Spark

            i will see if i have a CDI box i can send you to try { i will need it back if i do } i should have a pickup somewhere also . if you cant figure your problem out soon let me know it will take a few days to get though my shop to check for the parts .
            PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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            • #7
              Re: 1995 Seadoo XP800 no Spark

              Put a 12v auto test light between the signal (positive) coil terminal and earth and see if it flashes as you crank the engine over, this should tell you everything is working up to the coil. Coils can be difficult to test, I had one that tested fine, but wouldnt break down until underload. Replaced it and she ran sweet.

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              • #8
                Re: 1995 Seadoo XP800 no Spark

                Micheal73-Thanks for the test. I put the test light on it and got no flashing. I used my voltmeter and got a value .13 while cranking, Virtually no power to the coil to speak of.

                1fastski-That would be great if I could work something out with you for a test CDI. I see one on ebay right now that I could purchase. Caption says "used but works". That scares me a little. It ends in three days. I would be willing to pay overnight charges for the test CDI if you have one. Do you have a paypal account?

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                • #9
                  Re: 1995 Seadoo XP800 no Spark

                  Don't sweat the CDI on Ebay, as I have, and I'm sure Chris has, a CDI to sell you cheaper than you can buy one new for.
                  Bill O'Neal, owner of Watercraft Magic in Glendora California, www.watercraftmagic.com

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                  • #10
                    Re: 1995 Seadoo XP800 no Spark

                    i have paypal but theres no need to for paying just yet besides paypal cost to use , you can send a check when you return the CDI :-) , i can ship you a CDI to try BUT i do not have one for sale and will need mine back . if you would like me to ship it let me know you address and give me a call 609 926 5100

                    you might want to talk to BILL from WCM and if your sure you need the CDI buy one from him before you wast money testing and shipping mine .
                    PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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                    • #11
                      Re: 1995 Seadoo XP800 no Spark

                      I have a spare CDI for sale.


                      stv_bogart@hotmail.com

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                      • #12
                        Re: 1995 Seadoo XP800 no Spark

                        Were you able to get the test CDI out today 1fastski.com?

                        If this ends up being the fix, I will take one of you guys up on the CDI that you have forsale.

                        Once again I really appreciate the help

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                        • #13
                          Re: 1995 Seadoo XP800 no Spark

                          i have it boxed but no i have not made it to mailing yet , i will get it out tomarrow for ya
                          PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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                          • #14
                            Re: 1995 Seadoo XP800 no Spark

                            The CDI was it. I plugged it in and it fired right up. What typically causes them to go bad?
                            Thanks for your help and the diagnosis over the web. Hopefully I will be able to help you guys out in the future.
                            Thanks

                            Comment


                            • #15
                              Re: 1995 Seadoo XP800 no Spark

                              hooking up a battery backwards or any kind of short bad wires or grounds ect . possable somone junped it with a running car .
                              PRIDE IN SERVICE<br /> <img src="http://www.sbtontheweb.com/images/forposts/4609/1.jpg" alt=" - " />

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