Carb Leaking very badly

this happens to me on every other bike i build. fill'er up, and gas starts pouring out.

here's the fix.

take the carb off and take it apart. it's the 2 screws holding the float bowl on.

inside, there's the plastic float. if it's full of gas, it's got a leak, and you need a new one

if it's not full of gas, get some carb cleaner or canned air and blow out every opening. usually it's where the needle and seat are. iff you pull the pin out that holds the float (it'll usually fall out by itself) to the little brass piece, there's a pointy thing inside of a hole. pull that out and blow that out. any tiny piece of dirt will cause it too stick.

another problem is the needle and slide (the brass rod and the plastic round thingy) tend to stick sometimes, holding the throttle open.

the slide should move up and down freely, all the way when you twist and untwist the throttle. make sure the plastic slide is smooth and drops into the carb nice and easy. if it's kinda sticky, some super fine sandpaper, like 1000 grit, steel wool, or a buffer can smooth out any burrs. make sure it's nice and clean when you drop it in, and line up the tiny pin in the carb body with the slot in the slide. never force it. if it doesn't drop in on it's own, you're doing it wrong.

that's about it.

Avaryan said:

Bike is up and running now!

Broke down and re-assmbled the carb; that stopped the leaking. Going to pick up some new cables tomorrow. My bike has the exposed brake and clutch cables on top the frame. Gas tank is stopping the brakes from working atm.

Click to expand...

Slip a cable sheath(outer part of cable) over exposed area under tank or use a spacer under tank to lift it off the cable. (I used a piece of paint mixing stick)

I got cables that run over the top of the frame, too, ava... I used a couple rectangle pieces from a coarse rubber floor mat to space the Pnut up a bit. it has worked fine since installing...

I was lucky, a few times fiddling with the float height magically brought it to an adjustment point it liked. Now I'm cautious not to mess with it when changing the jetting.

Glad ur having fun!
rc