If cold, starts and idles fine. It will idle indefinitely, but once you take off it runs for about a city block and then dies and won't re-start. If it sits until completely cold, starts fine and same thing will happen when you try to ride it. I have installed a new carb, new plug (plug is not wet and perfectly tan), cleaned air cleaner, check vacuum valve on the tank. I'm stumped!
It's possible there is excessive wear on the piston rings.
SOURCE: 50cc Two Stroke Scooter Engine - Poor Idle
I had the same problem- from out of nowhere the scooter started dying at every stop. I adjusted the idle screw to 2000 and it still idled up and down. I bought some injector cleaner but this will take a while to work (several tanks of gas) and then found this link- seems to be a very simple thing to do once you read this link. I hope it helps. --
SOURCE: engine dies after it warms up good.
in the bottom of your carburator there shoud be a little plastics pieceand usualy it gets in the way of the float i take them out of carburtors all the time and usually it block the float so it floods out the motor i just found a picture on google of something like it. try taking that out and put ur carb back together like thate
SOURCE: I have a 150xcc scooter, water cooled,4 stroke
sometimes tight valve lash clearance will cause problems. Low compression?
SOURCE: Fuel Problem? I have an 8N that starts and
if you find the answer please e-mail me i have the same problem with my jubilee i've not been able to work on mine due to some fuel tank problems my e-mail is [email protected] thanks
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