Fuel pump problems... I assume that my fuel pump is bad. The engine runs great as long as I pump the fuel bulb. It then loses prime(bulb not hard) and dies. I have new batteries, new fuel and oil, and have isolated the "bad fuel" issues by running fuel line off a five gallon tank. Same symptoms. As long as I continue to pump the bulb the boat runs great! Can I assume this is a fuel pump problem or can you think of anything else? I think there is a lift pump and a fuel pump. How do I diagnose this?