1986 kx125 dies when hot....

[kxrunner_86]

my 86 kx125 runs hard when cold but once it gets hot it just dies..i just changed the stator and now im thinking the coil is partially fried..?

[Stormdragon]

Or you have a light seize on the piston. Try pulling the head and looking at the bore.

[ronin1959]

Originally Posted by kxrunner_86

my 86 kx125 runs hard when cold but once it gets hot it just dies..i just changed the stator and now im thinking the coil is partially fried..?

If she dies just like hitting the kill switch, test the ignition coils and the pulser coils for resistance when cold and then again when she dies. Your manual will tell you the resistance service limits. You'll probably find them within limits when cold but off the chart when she dies.

Had the same problem with my Z900 and it turned out to be the pulser coils going open circuit when the engine warmed up.

HTH, Ronin

[kxrunner_86]

alright ill check that out..thanks