I have a polaris 325 trailboss 2000 year model, it runs good cold but starts hesitating real bad when it gets into a strain. I've changed spark plug, that helped for a little while. The plug i pulled out was black except for the very tip, it was white. We road new years day it ran pretty good for a little while. Then started running real bad, acted like the rev limiter does in reverse. Let it cool off changed plug, it was black but not wet. Road for about 10 minutes and it started again. Have also changed fuel filter and took bowl off carb it was clean as a new one. Wached off at the car wash it started right up and ran good as a new one until it got hot, can anyone help me?

 

hey no reply yet

 

If you are running the stock are filter change it out with a new stock one or better yet a UNI or K&N. My 425 acted like that and a filter cured it.THis is the easiest thing to check first.

 

you may want to have the coil checked my old trailboss was doing the samething

 

The same thing happened to my sp 500 h.o.
I have it in the shop, I will let you know What they find. I did the same things that you did ( plug, carb, washed ) nothing seemed to help. so I took it to my dealer, he said that he never had that happen before. said that he would put his best man on it.
I will let you know wath he finds
Shedhead