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YOu can run a lot of tests on the MPEM but they don't tell the whole story. When I troubleshoot these skis I don't look so much for the problem but find out "what isn't the problem." That is much easier to proove. LOL Too bad you don't live near me. I have complete gray boxes. Good Luck.

I thought I had trouble with the holdr relay on my 96 GTX. My hearing isn't very good but I could hear it when it pulled in if the shop was quiet. LOL If they don't pull in, you'll get nothing. You might have an internal issue on the MPEM. I probably have a spare.

As said above do those checks. I would add a check of the mag plug. Sometimes the wires and connectors inside the plug corrode. I've had this happen a number of times. Instead of powering up the battery, leave the battery connected and unplug and plug in the mag harness. Also, there is a...

Fuel leaks are not good. Don't ride it. Looks like an accelerator pump not connected to me. You need to look into the why. Good Luck !!

I'd check for fuel injectors on the other side. LOL I'll assume he drilled a hole in the rave housing so the gas pressure up the bellows and open the rave or else the ski would not be running fine. I'd just cap the suction right at the rave housing and ride it. If it was working, your' good...

There is a terrific carb rebuild/repair thread on this forum.

I'm assuming you found the idle adjustment at the rear of the throttle body. I find lots of those are stuck, screws are broken off and such so beware. TPS reset is done by backing out the idle screw and allowing the butterfly to close completely in the carb barrel. Make sure the throttle...

That fuel regular was difficult for me to match. I order a regulator from a vendor and it ended up being a 42 psi. I think, I'm going from memory here, the regulator should be 48psi and hold it. Now.... I had a ski running fine with no fuel issues and the regulator bled down pretty quick to...

I've never really had an issue with fuel a year old or so but one can't be sure what's in the tank is good. Sometimes fuel degrades quickly so we need to be aware of that. A lot of people run 87 Octane.

You have to test your fuel pressure. Good that you are getting the injectors cleaned. Giving them throttle to start tells me you don't have the idle set correctly which means you'll have to reset the TPI. Did you replace your spark plugs? What is the quality of your fuel? Put some high...

Amen to that. I never trust a crank because you never know how many hours are on the engine or how it was treated. :D Only way to tell is disassembly and inspection. My point is that I wouldn't not "skip doing the top end" after disassembling the engine. Merry Christmas brother.

I believe a lot of that talk of replacing everything was just shops covering their azzes and making money and I will never cop to that methodology. This BS started in the mid 1970's with the two stroke motorcycles. To me you just test troubleshoot and replace/repair what isn't working as it...

I'm cheap :D :D and it was a pain in the ass. I was not able to find any info as to the location of the diode and no pictures to tell me where to look so I started digging. LOL I posted pictures on the internet so others could find it, they are on this forum also. I ended up making (2) test...

I may have an MPEM that would be useable in the ski. I've dug into them previously. :D

I know Matt Braley could set a timing curve on certain model ski when programming a key. I'm curious if it is as you say or it is not someone one would notice. In the end... Who Cares?? ... you got it running. LOL

Hmmm... I thought the MPEM had a timing curve for the engines. Well.... glad you got it working !!

So the relay shuts down the engine?

It does have some weird plumbing. :D This will be an adventure for sure.

Dug out the parts box and putting it together. It's dirty but I'm getting the engine ready for install. Cleaning, checking, tapping out the holes, rotary valve installed. I'll make it look nice. :D I'm not dropping it in until the pipes are cleaned and painted and it's all ready to go...

Maybe give it a try. I kinda gave up on the fuel systems as it's easy enough to pop the hood and have a look. :D . That large gauge is so expensive and difficult to find. I wish some gauge manufacturers would get onboard and make something compatible. I like it when everything works.