One of my bikes runs a lot rougher than the others I thought it might be the carby ive played around with that but it still runs rough. It starts easy but when you open up the throttle it splutters and jolts abit. Could it be an electrical problem, not a strong enough spark QUESTION how will a motor run with a faulty magneto or coil. I always thought it was a fuel problem maybe you guys out there put your heads together I cant work it out myself thanks mick29 PS Happy Riding