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  1. Replies
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    Odds are all you need are new brushes to restore...

    Odds are all you need are new brushes to restore function, the brush set for that starter is part number 278001112, you can order it here from the top of the page that says click here to order OEM...
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    Have a look at SW. Michigan CL boat listings,...

    Have a look at SW. Michigan CL boat listings, there's a 97 GTX for sale info gauge shows 140 hours. Thats the nicest family friendly 3 seat ski they ever made in that era of 2 stokes. I don't...
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    The price is less of an issue than who/how/when...

    The price is less of an issue than who/how/when the engine was rebuilt and who did the work.

    If there's a paper trail to a reputable engine builder and shop to substantiate the rebuild with some...
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    The 99 GTI uses an AC based ignition, only...

    The 99 GTI uses an AC based ignition, only digital DC ignitions are affected by a failing voltage rectifier as is common on say a GTX with a 787 series motor and digital ignition.
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    99 GTI's use a simple mpem as a ground switch...

    99 GTI's use a simple mpem as a ground switch module to limit rpms and control the ignition on and off, no limp mode all it has is an audible overheat alarm triggered by the temp sensor on the head. ...
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    Well even if it's not an ignition issue, by...

    Well even if it's not an ignition issue, by having the right tool to test the system you can rule it out and move on. The very first thing we do in the diagnosis process of a 2 stroke engine no...
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    This is a fairly routine complaint we see in the...

    This is a fairly routine complaint we see in the shop with older ski's that have ignition issues caused by the coil and wire sets.

    In any case where trimming the plug wires on the boot end has a...
  8. All SeaDoo mpems and ecu's that used DESS...

    All SeaDoo mpems and ecu's that used DESS security can be turned off allowing any lanyard to work. If you can place and hold a small magnet on the shoulder of the dess post and the gauges / cluster...
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    Have you replaced the fuel filters? Every now and...

    Have you replaced the fuel filters? Every now and then with a DI problem child I cut them open to find the filtration media almost completely saturated with water, and you know the rest of the story...
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    Nor do they stock $300.00+ Stevens Instrument...

    Nor do they stock $300.00+ Stevens Instrument calibrated peak voltage analog DVA meters or much of anything else above hobbyist level DIY tools and supplies that are needed to work on these.

    I...
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    The CDI on that particular board is controlled by...

    The CDI on that particular board is controlled by a thyristor. You need a true DVA meter to monitor voltage pulse to the coil a run of the mill box store or top tier standard DVM cannot see or read...
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    Board connections do look good, at this point I...

    Board connections do look good, at this point I would be making use of a DVA meter to measure voltage outputs before getting into it any further.
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    Suggestion if you want to try repairing it since...

    Suggestion if you want to try repairing it since it's not totally DOA.

    Start by separating the plastic case cover from the potted board, I use a hotbox in the shop we keep around to bring the...
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    A new MPEM is $300.00. They do not use Maxim one...

    A new MPEM is $300.00. They do not use Maxim one wire tech for security (AKA BRP DESS) that was used on OEM mpem's of this era so any key will function it. They provide more than twice the ignition...
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    Those pictures look familiar :) I have...

    Those pictures look familiar :)

    I have repaired several of the 97-99 DC CDI mpems for ignition related failure but it's not something I have shared on internet forums for two reasons.

    The new...
  16. Three things can cause this to happen. 1. Your...

    Three things can cause this to happen.

    1. Your starter solenoid/relay has failed in the closed position
    2. The transistor in the mpem that energizes the yellow/red trace wire that closes the...
  17. It's available, you need part number 278000638...

    It's available, you need part number 278000638 and you can order it here at the GH store:

    ...
  18. Here's a link for troubleshooting your dess post,...

    Here's a link for troubleshooting your dess post, and there's more information a few posts down on getting further into troubleshooting the low voltage line and key operation.
    ...
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    Then the solution you seek is heat! Go to thrift...

    Then the solution you seek is heat! Go to thrift store and buy pot large enough to place carb in, fill with water boil and drop carb in and let it soak a bit that seat will pop right out.

    Do not...
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    Every so often I steal away from the kitchen...

    Every so often I steal away from the kitchen drawer with one of my wife's wooden chopsticks and remove enough material from the OD so it fit's in the milled channel from behind the seat and give it a...
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    Your issue is pretty common on the 97's due to...

    Your issue is pretty common on the 97's due to corrosion on the mpem connector pins on amp connector one at pin location 1-7 & 1-15 (these are the grounds for the dess post that switch the mpem on...
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    There's two components to a DESS key that that...

    There's two components to a DESS key that that work through the post to allow function of the ECU, there's a small magnet in the lanyard along with a Dallas Semiconductor 2401 series chip with a...
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    Take some time and read this post I put out there...

    Take some time and read this post I put out there for 787 powered GTX owners, there's loads of bad info on the net with regard to tuning them and the manuals were printed before model releases and...
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    The exhaust bellows and water control bellows are...

    The exhaust bellows and water control bellows are not interchangeable parts.
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    Best way to test the charging system is a water...

    Best way to test the charging system is a water test with a digital meter hooked up so you can see what the stator and rectifier are really doing at a sustained rpm.

    If your no where near a...
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