it doesnt like to start and when it does it barely reaches 15 mph when it used to do 50 mph on a flat. please help me

george westbrook, June 2009

it is most probably the carbretor if you take it out and clean it it should be okay otherwise it could be a engine fault but my bets bet is the carbretor or the rollers could be ruined

callum, December 2010

i expect the exhaust pipe is blocked up with burnt 2 stroke oil,try to loosen the exhaust at the front and see if it makes it go better,if it does then there is your answer,buy a new pipe or cut it open and clean it out and weld it back up.p.s they do suffer from fuel hoses to the injector perishing and the bolts(7mm) that hold the injector into the head come loose and also break.

adam bike doctor, June 2009

Hi George it could be a number of things but when is the last time you had it serviced? Can you take out the sparkplug to see what colour it is? Sometimes the exhaust gets clogged up with waste burnt oil, this may need to be cleaned out. I think your ped is also fuel injected so it's not just a case of whipping off the carb & cleaning it like with older bikes. One of the sensors which controls the throttle response could be faulty, you may even have a dodgy ecu which is the bikes computer.

have the bike serviced & checked to see if the exhaust is blocked. if your bike is still going cr*p, then my advice would be to bring it to a reputable bike shop that can connect it up to their diagnostics machine/computer & they should be able to tell what the problem is very quickly.

steo, June 2009