Re: Losing prime
Small leak in the line from the fuel in the tank to the fuel pump. Includes drop pipe in tank, tank fittings, the line, the primer bulb, the engine connection, and all clamped connections.
Start by splicing in a piece of clear hose between the primer bulb and the engine. Look for bubbles there when the engine is running. Shouldn't be any.
Any leak from there to the fuel pump should leak fuel when you squeeze the primer bulb.
hope it helps
John