Originally Posted by
1QwkSport2.5r
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.
You should check the O-rings if that's the truth. I have K&B, ST, YS, Saito, OS, etc, engines. They all have O-rings on the HS needles, at least. Caveat; dunno about the Chinese ST engines, all mine are Saturno.
CR