Testing stator

[MustanGTyler]

Okay, I feel like a newb asking questions like this, and I'll admit I'm clueless when it comes to wiring, but I need to test the stator output on my 951 engine. I've been having a problem with it not charging and purchased an aftermarket external rectifier kit that did not solve my problem. Before I go drop more money on parts that I don't know for sure are broken, I purchased a multimeter and have no clue how to use it. Someone mentioned testing the resistance between any two of the three yellow wires coming from the stator housing, then testing to see if it is going to ground? How do I go about doing this exactly? Thanks in advance

 

[Musicmanjer]

Ok, not sure what meter you have, but make sure your selector dial is on 200 OHM (looks like the omega sign). On older coils you test the 2 wires coming from the stator with the red and black leads of the tester meter. Shouldn't matter which color you use because the coil has no + or -. The reading should be between 40 and 70 ohms. If you get nothing for a reading, the coil may have a bad winding, or if the meter reads 0, it could be shorted out. Also check the leads from the coil to the engine (ground) to make sure it isn't shorted out by putting the black lead of the tester to the engine plate and the red to one of the three wires off the stator, checking one at a time. If you get a 0 reading, it may be shorted out to ground. Maybe someone with more experience with three wire stators can chime in to help. Best of luck!:coolgleam:

 

[MustanGTyler]

Here's what I did, I disconnected the three yellow wires from the stator housing and set the multimeter to 200 Ohms. The resistance between all three of the wires was 0.8 Ohms. I did this when the ski was NOT running. Is that correct? Also, with the harness plugged up, the ski will start up and run poorly for a few seconds then cut off. With the yellow wires disconnected, the ski starts up and revs to the moon. Why is that? Thanks!

 

[SabrToothSqrl]

Did you test the stator before you spent $ on the rectifier?

My stator went bad last summer, I just had a dealer do it since they have the connector tool... you could also remove the stator if you can get to it. on my XP you can remove the stator w/out removing the pipe or engine, but I don't think you can do that on the GSX...

the stator and the rectifier (or MPEM) are the only 2 parts of the charging system... my guess is the problem was and is still the stator.

 

[hollywoodbadguy1]

where would the stator be on a 90 sp bomb? im getting no spark with a known good Ignition modual a rev limiter taken out of a known good and running sp my other one ? at a loss