I'm having an issue with my 1997 Yamaha Pro-v 150 this week, first problem with it so far.
The problem started right after I filled my topside gas tank. I removed it from the boat and took it to an inland gas station (saving a buck) and once got back to the boat and hooked it up, primed the line with the plunger, she would not start (usually fires right up).
The plunger bulb does get hard when priming, but doesnt stay hard for long. I checked both fuel pump diaphrams which are in good shape with no holes/tears.
The main problem I do see is that gas is dripping/flowing out of the bottom carb and coming out of the air intake after I prime. I removed the intake and can see the gas coming out of the carb while I squeeze the primer bulb.
I've taken that bottom carb apart and cleaned it out. Still gas flowing from it as soon as I prime it.
What else could cause a carb to overflow besides a stuck float?
Any help would greatly be appreciated