QUOTE ("Dirty4man":2qgshrbs)
Most people only plug the carb drain when they ride deep. I leave both mine and the wifes bike plugged all the time. But if your jetting is off and running rich it will dump the excess gas in the airbox if the drain is plugged.
I've tried plugging my carburetor drain tube twice and each time the airbox has filled up with gas. I replaced my plug yesterday with a NGK Iridium and the one I pulled out was really black. It ran sluggish on top end when I took it down the road and back.
I am running a 170 jet, air/fuel screw is turned out 2.5 turns. The only thing that I'm not positive about is my needle setting, I paid a local shop to rejet my carburetor last year. Should've saved my money, they stuck in a 165 jet so Ichanged it to a 170.
What should I do to remedy this? Is it my air/fuel screw or could it be my snorkel?