I have a Johnson 1988, 2 cylnder, 2 cycle, 2.5 (3)horsepower outboard, Model J3RCCM. When fuel is opened gas pours into carb and floods out. By adjusting fuel open/shut valve to close to closed position , can allow engine to run rough for awhile. Upon inspecting carb, I notice 2 small holes above and to each side of the carb. throat. One of the small holes has a brass plug with small hole in it, the hole to the upper right(if looking straight at carb. from front)is open and has no brass plug and this hole , when opening the gas, seems to fill quickly with fuel and overflows into carb throat and all over the place.
