Overheating Problem on RMX250

[1sickdude]

After rebuilding the top end of my 1995 RMX 250, I'm noticing some overheating. Aside from rebuilding the top end, I haven't don't anything else different. My first thought is could it be the water pump? How often do they go out? It seems unlikely, but never the less. I also read it could be because I"m running to lean. Any information on overheating would be great. Thanks for reading.

1sickdude

 

[sick 96 250]

it could be eithe rlike you said, are you losing any coolant? If your coolant is staying level you are prob running lean, try jetting it a little richer and see what happens

 

[YZ165]

I'd check teh plug and see if it's lean. If that's okay, then look into other areas. I have seen impeller blades damaged/broken off, but not very often. YZ165