26-01-13, 04:42 PM
that sounds like classic symptoms of tight valve clearances to me. have you ever check your valve clearances? what happens is the clearance is too tight and when everthing gets up to running temperature it expands and the valve gets held open all the time and so you lose compression and so the bike won't start when it's hot. this can burn out your valves because the valves cool themselves by seating against the head and if they're being held open they can't cool properly