Bigsmoke93
New Member
Right guys Im at my whits end right now I have a 50cc runner sp with a cast iron 70s kit and 21m carb when I get on it after warming it up it's like I have to break it it going 10mph as any higher makes it splutter eventually gets better after around 5min of slow riding also I can't get full throttle without it doing the same I can use about 3/4 but the last twist is a no go unsure what to do as it's my first bike any help greatly appreciated oh and forgot to mention sometimes struggles to idle
