1978 800 (80hp) merc thunderbolt ignition. Had a problem with no power replaced the fuel pump seemed fine. Then It was fuel pouring out of carbs. Replaced all gaskets and cleaned carbs now there is no fuel coming out of carb and I have to put fuel into them by hand to get it to start runs perfect after starting but have to put fuel in carbs by hand. Primer bulb doesnt get hard and seems to blow air backwards to the tank. Ant Ideas guys.
