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96 xp ignition issues

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Whus02

Whus02

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Hi all, I have a 96 xp that recently stopped revving past ~3000 rpm. It sounds like it starts misfiring when it reaches 3000 rpm. I believe it is an ignition issue as I have had a similar issue with another ski and it turned out to be the rectifier in that case. However, I replaced the rectifier with no luck. I saw another post with a similar problem that was cause by a weak connection at the coil. When I checked the coil I found that it has a resistance of .7 ohms while the manual says it should be .34-.62 ohms, would this difference cause my issue? Or any other things I should check?
 
Unless you have a very expensive ohm-meter the difference between 0.7 and 0.62 is probably not significant. Short to leads of the ohm-meter together and any reading that you get can be subtracted from the 0.7 readind.
 
Ignition coils,,,like many electrical components,,,will start to fail after they get warm/hot,,,have you changed the plugs,,,but I would load test the battery as my first move,,,a weakening battery,,,(or a cell),,,can cause electrical gremlins,,,
 
Just got a chance to test the ski with the red wire from the rectifier disconnected, the problem has not changed, the ski still feels "stuck" at 3000 rpm, Is there anything else I should be looking at? I also tested the ski out of the water and it reached 6000rpm.
 
Skis can be "champs"on the trailor without a load, and "chumps" in the water when there is load...I would start at the battery.
 
It was running perfect up until a week ago with the same battery, and the problem came up while I was riding. I'll try to get a new battery, though. I also have a new coil I will try.
 
With a volt meter on the battery. Should read 12-12.5 sitting not running and 13-14 when you rev the engine up to 4,500 rpm.
 
I think I am going to try a new coil before digging into the charging system. I'll let you all know how it works in the next few days.
 
The test Mik is asking takes all of 30 seconds and 2 people. Just probe the battery before you start it. Then start it look at the volt meter at idle, note voltage. Have other person rev to 4500 note voltage. Shut down ski. So much easier than swapping the coil.

Also, you can check the coil with your meter, the procedure is in the service manual.
 
I will check it tomorrow then. I followed the test in the manual and the resistance is good. But the manual says that a coil with good resistance can still leak voltage at high voltage levels and I believe that is the problem I'm experiencing.
 
Just checked the battery voltage, I got 12.2V with the ski off and ~12.8V running at ~4000rpm on the trailer. I also did the static test for the stator and got .8 ohms resistance between all of the yellow wires, and no continuity between any of the yellow wires and ground.
 
mikidymac said:
Sounds like a plan. Just hate to see people spend money they didn't have to.
Click to expand...
No worries, I appreciate the help. I'm just trying to eliminate all the other possibilities so I don't have to pull the mag cover only to find out that my problem is elsewhere.
 
Whus02 said:
Hi all, I have a 96 xp that recently stopped revving past ~3000 rpm. It sounds like it starts misfiring when it reaches 3000 rpm. I believe it is an ignition issue as I have had a similar issue with another ski and it turned out to be the rectifier in that case. However, I replaced the rectifier with no luck. I saw another post with a similar problem that was cause by a weak connection at the coil. When I checked the coil I found that it has a resistance of .7 ohms while the manual says it should be .34-.62 ohms, would this difference cause my issue? Or any other things I should check?
Click to expand...
Ambient temperature will effect ohm readings so you are probably good there
 
Went through a couple more tests to be sure I won't be pulling the mag cover for nothing, found that you are correct about the stator. I will be pulling the mag cover over the next few days.
 
I replaced the stator and pickup coil and my problem did not change. Anything else I should check?
 
Have you tried putting in the working rectifier from your other ski? Sometimes a rectifier can be DOA, especially if its a cheaper one

Edit: oops my bad, didn't see that you already tried unhooked the red wire
 
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