For a couple of weeks now my 49cc Huasheng engine seems to be misfiring. at speed at a constant 1/2--2/3 throttle, and going downhill while still on the throttle, it sound like it is hitting a governor or something. it is fine while adding throttle. also a couple of times now after riding for lets say maybe 30-40 min. the engine has puttered out and just died. after about 5min it will start right back up and go. but will still have the misfire. I run strait 91 octain gas no ethanol. the only mod I have done is I built a 12in strait pipe out of electrical conduit pipe. I left the factory steel shim plate on between the pipe and head, could this be impeding air flow to the head fins? I did go to an iridium plug but it did not change anything. also put in 10-30royal purple oil after break in.
could it be an electrical issue to the coil? Do these engine have a govenor? and if so can they be removed. already checked the fuel filters, and they seem to be good. Lastly I have noticed that after it does die, that there is some oil in the air filter. I would say I have had to clean the filter out bout every 6-7, 20min-1 1/2 hours rides.
could it be an electrical issue to the coil? Do these engine have a govenor? and if so can they be removed. already checked the fuel filters, and they seem to be good. Lastly I have noticed that after it does die, that there is some oil in the air filter. I would say I have had to clean the filter out bout every 6-7, 20min-1 1/2 hours rides.
