My new scooter started stalling since taking ownership. It will start and run great, except every 0.5 to 8 miles it will stall. After coasting to the side of the road (Very Dangerous Situation) it will restart and run fine till the same thing reoccurs. I tried riding without fuel cap and adding carb cleaner (Seafoam) without success. After 80 miles it is back at the dealers.
The dealer is working on it, considering the magneto. I read of a guy who had this problem which turned out to be a bad CDI.
Before returning it to the dealer with 80 miles on it I verified there was not a vacuum occuring in the tank by riding w/o the gas cap...still stalled then restarted. Seafoam was added to fresh gas and no improvement.