Honda Spree and Elite 50 Forums

put a new carb on my '00 moped and it runs a lot better, will start great, run great, take off really good and will get up to 32MPH which is fastest i've ever been able to run it at.

heres the problem,
about 1-3mi or a full throttle, will run then start to back fire in exhuast, and start to sputter, i'll play with the throttle but it will still choke off and want to die,
i'll come to a complete stop, try to keep it alive but intially it will want to die, so i let it.

after a coupl kick starts it will act like nothing is wrong, it will take off and get up to 32mph, then again in 1-3mi at full throttle it will want to do the same thing, sputter, spit, want to die, stop, kick start and go again.

any suggestions?
brand new carb put on last week
spark plug about 1yr old
new filter,
battery

thanks

Greetings:

Why the new carb? How did it run before? What kind of carb did you get? New Honda airbox filter or a Pod of some sort? What does the plug color tell us? These and other questions need answers for the Forum to be of any assistance.

Consider installing a New spark plug gapped to 0.024" and see if the behavior improves. A Cylinder Head Temperature gauge would at least give a hint as to what may be a mixture problem. Cheap Clone carbs from Asia are notorious for variable results.

Is the new carburetor
from Honda, or ebay? Did you have old gas in the tank from last year?
Try pulling the petcock and the filter out of the tank. Clean filter. Lets see what happens.

Sounds like you're using up the fuel in the bowl and when you stop the fuel flow could be refilling the bowl. Linked or restricted fuel line? Float sticking closed?