I have a Piaggio Zip 50, I am unable to open the throttle right up, if I try this the revs die to a tick over level and it doesn't get any faster. When I start going up hill it really struggles and starts to jerk. Can anyone suggest a cure?
Ive tried all of these and none of them work, could it be the clutch springs? They seem to be pretty loose, the haven't been touched they are just standard ones
Craig Broadbent, January 2016
and its got a race exaust on it
bart, September 2009
i have got the same probs,i put new rollers in it and a drive belt, it works better but when it gets hot it wont go up hills ,it slows right down.
bart, September 2009
most likely is the cat has fallen apart in the exhaust if its a zip cat model very common.just replace the pipe of cut it open take out the broken catalyst and weld it back together.it blocks up the pipe and it cannot breathe so it goes slow.either that or its running weak due to a hole in the airbox or pipe that leads to the airbox from the back of the carb venturi.
adam bike doctor, May 2009
i have the same problem, i am about to check out the drive belt to see if it is worn or sliping when i put the ped under load like climbing a hill,i will let you know how i get on
paul, May 2009
I'd go for:
new spark plug
clean the air filter element
strip and clean the carburettor...in that order.
