R6 motorcycle cylinder misfire power loss fault finding spark check diagnosis

My yamaha yzf r6 5eb 1999 suddenly lost power on the motorway and started farting and missing when exceeding 4.5k rpm so I had to do some fault finding, checked the cylinders with the water check and cylinder 4 was not firing up! So done some coil and spark checks and all seems to be fine so the problem must be in the carbs!!
Yamaha r6 r1 honda cbr rr fireblade Suzuki gsxr Kawasaki ninja hayabusa

Видео R6 motorcycle cylinder misfire power loss fault finding spark check diagnosis канала Azz Kam