Venomous
New member
Hi All, Working on a Mercury 20 Outboard for a friend. Carb was originally leaking out the overflows. Rebuilt the carb and now float valve is closing properly and no gas leaking from the overflows. When you try to start the motor, after a second or two of the motor turning over, gas starts to drip out the front mouth of the carb. If you hold the throttle open it will start, but gas continues dripping out the mouth of the carb. I have taken the carb apart again. And everything seems to be in great shape and working properly. We even bought a new carb and it does the same thing. Any ideas? Thanks for any help.