k11 misfire

[spinningwheel]

i got a prblem wth my k11 its gt a misfirr on cylinder nmbr 4 ths strtd afta i dd an overhaul afta it had over heated at frst i thot it ws th valves bt afta head removal again i dd tested them n they were all not leakin.i evn swopd the plugs n ht cables stl th sam

 

[davyboy]

Dizzy giving up, coilpack breaking down, throttle body problems. why did it overheat (?)