i took my xr1000 out last sunday first time since the race in may. started from zero engineering in okazaki and went to see one of my friends' exhibition in inazawa. good 40miles ride in 100F heat. got problem about after 20miles... unstable idling, felt like no gas were sent when i opend the throttle.
anyway, i got to inazawa, enjoyed the exhibit and waited for the sun to go down near the horizon. i started the engine. it was running no problem. i left inazawa and after 20miles, it started again.
i got back to zero, just changed spark plugs and when i left zero, of course, the engine was running "okay." and again, xr1000 decided to play funny.
i don't know what it was but i tried a few things and now it is running fine. one of the things that i found was that the picker rotor had a crack.
i broke it once just a couple of races ago. fitted a secondhand one from zero's storage and it only lasted maybe 5 track rides including 2 races. i'm about to call Nallin Racing Head Service now...