I've been having problems with the bulb going dry when the boat sits for a few days. The fuel pump will keep it primed and running when I'm out on the water but I'd like to find the leak. I can squeeze the bulb all day if the engine is not running and it wont prime. I found that if I disconnect the fuel line from the engine side of the bulb I can draw fuel right up. I have checked the line from the bulb all the way up into the engine and can't see any problems. Anyone know what it may be?