why would a bike only run poorly after a half hour run?
my kle runs fine and ticks over, starts no problem, but after a half hour run it just keeps cutting out. it starts again and putting the choke on seemed to help it get going again, which i suppose might be a fuel starvation thing? but have tried everything i can think of, have had the tank off, the fuel tap apart, the carbs off. have wd40ed the cut out switch and ignition, checked the breather pipe, spark plugs, hd leads and plug caps . . .
has anyone any ideas please?
i got to get to work.