I HAVE A 92 250X THAT WILL START JUST FINE WHEN IT IS COLD, BUT THE PROBLEM STARTS WHEN IT GETS WARMED UP OR HOT IF I TURN IT OFF I CANT GET IT STARTED AGAIN TILL IT COOLS OFF. COULD THIS BE THE CDI BOX? AND IF IT IS WHAT CAUSES IT TO DO THAT. THANKS FOR YOUR HELP.

 

I had the same problem with my ex, it was a few burnt off wires.

 

Could be the carb is jetted too lean. Does your engine or exhaust get so hot it glows?

 

it could be a gasket or rings problem. your rings expand with heat so they might be worn.does it smoke when it is warm?do a compression check when it is cold and when it is worm.you may find your problem.hope this helps.

 

I'd say you need your valves adjusted... and it wouldn't hurt to have the carb cleaned either

 

WHICH WIRES ARE YOU TALKING ABOUT? CAUSED i CHECKED THEM ALL AND i DIDNT FIND ANY BURNT, DISCONNECTED OR LOOSE.
THE EXHAUST DOESNT GET RED HOT IVE HAD THE COMPRESSOIN CHECKED AND IT IS GOOD, I ALSO HAD THE VALVES ADJUSTED (EXAUST VALVE WAS TOO TIGHT) AND I HAVE REBUILT AND CLEANED THE CARB. THESE ARE THE THINGS THAT I THOUGHT THEY WERE TOO, BUT IT STILL HAS THE PROBLEM I FIRST POSTED. DOES ANYONE HAVE ANY MORE IDEAS, IM STILL AT A LOSS.
THANK YOU