My buddy has a 500 I am working on there is something wrong with the electronic it runs good till you get to 3/4 throttle then it acts like it is way rich jetting does not help. I changed the stator today and it ran great at all throttle position for about 30 min then the same thing. I did a leakdown test and everything good there
and buy acts rich I mean its bogs down and won't clean out
Voltage regulator and cdi would be my guess to test
Voltage regulator and cdi would be my guess to test
voltage regulator is strictly for the lights.Has nothing to do with the ignition.
second rainman.
check coil and plug cap.
Have you checked all grounds and cleaned all grounds?
The whole ran great for 30 min after the stator swap has me stumped also
please update as you figure it out please
As Skeans said I,d check the grounds.I had my frame/engine mounts powder coated and would get intermittent spark.Once I cleaned the contact points on the frame mounts and engine I was good to go.
If they are good I would suspect the coil may be breaking down once it gets warm.Do you have another coil around to try?
I should have a coil I can try. I will look through all the grounds again to make sure
Check the CDI. I've seen a new CDI manged to produce a weak spark from a dead stator every 3 kicks or so. I'd imagine a good stator could help a dying CDI in a similar way. The manual has what resistances to check or just swap out with a CDI you know works. Lets us know.
sorry guys I ended up being a bad cdi