smartass Posted March 22, 2011 Posted March 22, 2011 Hi All, This is my first post, hope some one can help! I recently started my bike after the winter, it now has developed a misfire on cylinders 1 & 2, this has only occurred after the recent cold spell in November/December. I have also changed the plugs and air filter. I have checked the following: 1) Plug spark gap, earthed all four plugs individually, spark strong and blue on all plugs. 2) HT coils have been checked using a multimeter for continuity and were intact, haven't checked resistance. 3) Fuel filters cleaned and not blocked. 4) Throttle position sensor (TPS) is fine, bike idles at 1200 rpm and is stable when starts. 5) Fuel present in chamber as this runs down the inside of the exhaust on 1 and 2 cylinders. After start up, cylinders 1 & 2 were stone cold but 3 & 4 were v.hot. Anyone got any ideas, planning to check the ignition control unit at the weekend and the carbs for residue. Many thanks Dave
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