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Nope, still need some help please. I have replaced the coil and replaced the spark plug. Got a nice spark and the bike started and ran nicely but is surging at high revs. So stripped down the carb...

Thanks very much I probably should have mentioned that the bike has done about 4500 miles, so I hope that the engine components are not showing significant signs of wear at this point. I will get a...

Hi I have a superbyke RSP but it is missfiring at high revs I have stripped down the carbs and cleaned, it idles OK but does not rev freely to higher revs and when it does get there it dips revs and...