I need help! By jk (Read 523 times)

[jk]

So i have Tank 100cc qmb139 scooter i cant get my carb set right....idk i feel like ice tried everything from moving the adjust screw on valve, moved needle, changed and checked fuel and vacuum line as well as manifold leaks. My throttle cable came off a Bronc 49cc im not sure how to adjust throttle or test conpression but i am closr to giving up...plz help before its too cold to ride!

[tvnacman]

tvnacman.blogspot.com/
what kind of muffler, what kind of air filter. Have you changed the main jet?

John

[zack]

Don't give up!
Give us some more info.
Was your scoot running good before a change was made?
Remember that ignition problems often mimic carb problems. I suggest removing as many variables as possible, return your carb to stock settings, remove the air cleaner element and see if that helps. Don't go far or ride in dusty conditions with no air cleaner of course.
Check the condition of your spark plug, the color of the electrode will tell you if your getting too much or too little fuel to the combustion chamber. Check the quality of your spark. Let us know what you find.

[richardthescooter3]

Did you clean carb when you had it off?