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  1. #1
    waterbug's Avatar
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    '96 XP 800, no spark

    I purchased this XP knowing that it sometimes had no spark, sometimes it did. So, sometimes it runs.... or not... Is there a common failure with this machine? I'm thinking it may be the coil. What do you guys think?


  2. #2
    Tool Bag water worx's Avatar
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    You need to make sure that that there is a small black wire coming out of the rear electric box & that it is hooked up to the neg post on the battery.

    And that it is grounding the coil in the rear electric box.

  3. #3
    waterbug's Avatar
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    It is grounded to the battery.

  4. #4
    Tool Bag water worx's Avatar
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    Yes but is it grouding the coil,the wire tends to get broken inside.

    Here is what I found,remove the white wire that goes to the bottom of the coil & see if it turns over,if it does then you are grounded,if it dosent turn over with white wire off then its not grounded.

  5. #5
    waterbug's Avatar
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    I will try that when I get home tonight...

  6. #6
    rotaxmech's Avatar
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    spark

    I found that battery HEALTH was critical to the 96 model. Motor would turn over all day.. but no fire. Slap a good charged battery in and WHAM...

    CBL

  7. #7
    bigdeez's Avatar
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    also on those you may get eratic spark, like it may idle but after a few mins. of warm up it acts like its starving for fuel won't rev. if you put a inline spark checker and see that it is very eratic or not even advancing like it should then you change you voltage reg. and it will go back to normal. the reg looks fine but it is starting to fail and letting out alot of electrical noise and causing the mpem to do weird things.

  8. #8
    waterbug's Avatar
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    I tried disconnecting the white wire and it turns over with the white wire off. Also tried a freshly charged battery. I get weak spark from one plug.

  9. #9
    96XPSS's Avatar
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    Ok, then based on what you stated in your first post, check the inductive pickup located under the front engine cover. The original pickups were weak, and the mounting ears would crack and break off of them. Especially if the ski was jumped often or ridden in rough water.

    Secondary possibilities are the coil and then MPEM. Sometimes the pins in the front engine plug get corroded and lose spark. If it was a saltwater ski for sure.

    Grounds are always the first possibilities, as Worx hooked you up with that.

  10. #10
    maxadrenaline's Avatar
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    I have chased that gremlin before. Like the guys said..Check the ground wires for broken and corroded connections. I have installed Two ground cables to my engines. Also, the coil wires where they plug into the coil itself may be corroded over time, and or loose. Be careful and pry off the platic clips holding the plub wires, and clean the heck out of the pins that are on the coil.
    Check ALL of your fuses for corrosion. That green or white junk you will find on them is not a real good conductor. Every connection that you can clean will not hurt a thing, and it is free.
    Good luck.

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