nismogsxr

My 12V low light would come n stay on. I also stuck my voltmeter to the battery and verified it

That sounds like gas issue, I had that early this year with old gas, add some injector cleaner and run it close to empty before you add gas, then fresh ethanol additive and injector cleaner.

I am thinking it might be. I went ahead and changed the spark plugs. The old ones had a little rust on the top of them, but the electrodes did not look that bad. I checked that 30A fuse for the charging system, and it was corroded badly. I cleaned it out, and put a new fuse in it. Now it is charging at 12.8V, which is better then before, but I am going to finish troubleshooting the charging system. I went ahead while I was at Oriellys and picked up some Lucas ethanol fuel system cleaner and stabilizer seeing everyone raves about Lucas products. So next time out, I will fill with 93 octane and add the ethanol treatment.
 
I just got done pulling out the multimeter and troubleshooting. Each leg of my stator had under 1 ohm of resistance to each other, and none of them were shorted to ground. at around 4K, the stator was pushing around 45 VAC to the regulator, so it is creating power. Well all that is left to be wrong is the regulator/rectifier.  When running the engine, even at idle, the regulator/rectifier and the wiring coming out of it is HOT. I have seen that a lot of people have problems with the seadoo regulator/rectifiers for the 4tecs, Are they still having problems with them, or is there an aftermarket company that makes a better one for our boats? I looked at my local dealers microfiche, and it calls for a #278001969, which is an updated part, so I am hoping they fixed the reliability problem

The only thing that is not passing due to the specs in the shop manual is when I test ADC at the charging system fuse. I am getting nothing there. So I am still unsure on what is wrong.

Well I took a look at my impeller and wear ring, and I don't think that either look bad at all, but what do I know. I do not even know the clearance spec. When it lost its power, its not like everyone saying "spinning tires," it was kinda like bogging down. That is what makes me think maybe the guy overfilled it with oil. The guy who had it told me him and his friend just replaced the oil, and as I was talking about the supercharger, checking to make sure it had not failed, he looked at me confused not even knowing it had a supercharger. So he probably has too much in it. I do not know how much overfilling it will kill the motor, but I know it is not good for it. I know around here in NC, all I will find non-ethanol wise is 87. So I guess I will have to run premium with the ethanol additive.