JACUSTOMER-bb7r9b1i- : We have dbl checked the valve clearance and as I mentioned the vehicle choke was swapped w/the carb Please evaluate the jet and when it does not match your jet go through determine that jet or send us an image of your jets (just the jet by alone). http://hondaruckusburnout92582.bloggerswise.com/1321381/a-secret-weapon-for-fast-honda-ruckus