The 95 xp came with 1.25 gal mineral XPS oil that I almost finished up using. Thought it would be fine but obviously I have no idea.
The 96 I suspect has mineral oil because of the empty bottle XPS mineral oil in the trailer box I bought with it. Since I have no idea I figured I would clean the oil tank and switch to synthetic. Should I do the same for my 95 XP? I hope its okay.
Thanks Jetskigoodies. I appreciate all the help.
If it were me, I'd use the mineral oil up in the '95 XP (assuming it is PWC quality, API-TC oil) since that has the 717 (no RAVE), but most people seem to recommend the Full Synthetic API-TC in the 787 engines. That is what I plan to use (if/when I get a 787).
Good news that your '96 XP turned over and has good compression. That cuts $1000 off the cost to get 'er running.
Jumping across the solenoid proves that the starter, battery, wires, and ground are good, but unless I missed something I don't think you can assume that the solenoid is bad based on this test (unless these are notorious for crapping out). Based on past experience with solenoids (but not on Sea Doos), the next test is to test the low current (small wire) side of the solenoid.
[EDIT: The Service Manual has some easy to follow steps in Section 8, Subsection 4, page 2. It explains how to test the Start switch, kill switch (lanyard) and two tests for the solenoid - ignore my next paragraph...].
Hopefully someone on this forum can tell you (us) what wire on the "small wire" side of the solenoid would need 12v jumped to it in order to activate it. Given the MPEM concerns, taking the solenoid completely out of the jet ski might be the best idea for this test. I believe, if the solenoid tests good, then the starter button, the kill switch, and of course the MPEM itself could cause this problem.
My next step would be to check the low current (small wire) side of the solenoid to verify that it really is bad.
IMHO, getting this problem figured out is your #1 priority so that you can check to see if you are getting a spark.
Then as the #2 priority I would do all of the fuel/oil related things on you list (to include cleaning the RAVEs). It would also be a good idea to check with BRP or the dealer to see if the gas tank has been replaced. I am pretty sure these came with a defective tank that they will replace for free.
Once you have these 2 priorities figured out, then you can at least play with it a bit on the water while the rest is tweaked.