Re: 1950 Speeditwin Carburetor Leaking Fuel

[George Emmanuel]

First, the float in that carb is metal,–you cannot re-coat it. There is a slim, very slim, possibility it has a leak and is heavy, but that is extremely rare. If it is heavy from leaking, it need to be replaced. More than likely there is damage to the needle that allows gas to bypass it. Remove the needle and see if it has a smooth surface. You can smooth it using fine steel wool, but if it has grooves it needs a replacement. If it is good, turn the carb upside down and using a large pin punch and light hammer, lightly tap the bottom of the needle to seat it against the seat. Then see if it leaks on assembly.

Speeditwin carbs are flame throwers! Wait till you see the flame it shoots out when it backfires without the front cowl on! And yes, they do spit a small amount of gas when running.

George