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MPEM, CDI testing procedure (1994 XP-650

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  • MPEM, CDI testing procedure (1994 XP-650

    Hi, sorry for my bad english ! I'm trying to find a way to test the MPEM, the CDI and the magneto on this 1994 XP 650.
    It is my friend's Seadoo and I'm trying to help him.
    The engine starts but stalls as soon as we crack the throttle. I cleaned the carbs but they were not durty. I didn't change any parts !

    When I was testing it (with flushing hose), the starter was weak. After some testing, I fund a black negatif wire, in the plastic box, that was melted to the output stud of the starter solenoid (starter side). So when I was starting the engine, I was sending 12 Volts power to the ground circuit of almost every boxes... Even the isolator is melted on the black wire of the magneto wiring harness.

    That's why I'm looking for help for testing every thing with an ohmmeter. I do have some Bombardier shop manual but only for 1996 and up. I also have a Clymer manual but testing are not complete...

    Any help will be greatly appreciated !

    Pierre

  • #2
    Re: MPEM, CDI testing procedure (1994 XP-650

    This would be the same as if you reversed the battery cables. Typically, that melts wires in the harnesses. I doubt you hurt the stator or the CDI. Maybe the mpem and some wires.
    Bill O'Neal <br>
    WCM
    <a href="http://www.watercraftmagic.com"

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    • #3
      Re: MPEM, CDI testing procedure (1994 XP-650

      Thanks for your answer, if I ever need an MPEM, do you have some used one ? and how much do you want for ?

      Thanks, Pierre

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      • #4
        Re: MPEM, CDI testing procedure (1994 XP-650

        I might have a 1994 XP MPEM.
        Have you tried replacing the relays that plug into the MPEM?
        Bill O'Neal <br>
        WCM
        <a href="http://www.watercraftmagic.com"

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        • #5
          Re: MPEM, CDI testing procedure (1994 XP-650

          No I haven't !! I saw some fuses but I didn't see those relays. I will look at that tomorrow.
          I will let you know if my friend wants some parts or maybe he will bring it to the dealer...

          Thanks, Pierre

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