Right,Rob.Clean all parts and passages in the carb.and blow it out with compressed air,especially the small holes and main jet.MAKE SURE the carb. vent isn't plugged(small hole usually near top of carb.).You're sure the exhaust isn't plugged with carbon or the exhaust port at the cylinder?You may just need to click on `resources' above and then `articles' and read and copy Fred's guide `How to fix your Moped'.It's great because it's simple to follow and written for anyone who has the desire to save big bucks by working on their own `ped.