Originally Posted by
Charley
Either way, the tubing should stop it. I've never had a engine with just muffler pressure leak fuel at the needles.
What kind of pressurization are you running?
CR
I run regular muffler pressure on all of my engines except one or two (no muffler). Some of my Super Tigre, both K&Bs, and my Enya .30 all leak a little fuel from the needle.. My ST S29 is probably the worst. They do not have O-rings in the needle holders or on the needles themselves like other companies do. At least not on the Carburetors I have.