Hello everyone I am working on an 07 piaggio BV 250, (4,500 miles) for a friend. Here's the skinny... The battery died on this scooter last year and he started jump starting it to get it running. Then he put it away for a while and the carb gummed up. I changed the starter motor since it was jammed and put a new battery on. I cleaned the carburetor and put fresh gas and we took it for a spin. Runs great!
From a cold start, 3 miles into the ride the power cuts in and out really fast and the bike starts to shake as you ride. I put on a new plug, same problem. I changed the coil, same probem. Running premium gas. I suspect that the CDI is fried from all the jump starting. What do you all think?