Well having struggled & cleaned what appeared to be clean carbs 5 times & replaced the idle jets & used a rebuild kit on the carbs. I was convinced it would be cured, but once again started whilst cold on the bench, but failed to stay at idle when hot. Regardless what I did it died.
Having checked & adjusted the valves whilst waiting for the jets, there was nothing left to adjust, so what could be wrong ?
So in an act of desperation, I thought back to what else had I changed last spring whilst overhauling the bike ? Well the coils were replaced with COPS, and it seemed to fail as soon as the fan came on ! So as the old ones were sitting on the floor, I thought I'd try with the old ones temporarily rigged up & BINGO, the thing runs until its well hot, survived multiple fan events. So it looks like the CBR600RR COPS I have are crap
Anyone else done COPS ? Which ones did you use ? The CBR ones are the perfect size.