Originally Posted by drh1965
Ah... I'm starting to understand how you feel. Seems that's a virtue of buying
an older boat
I think I've got the problem licked now... I cleaned the pickup with a wire and bled the system again. The engine ran for an hour after that. Hopefully, it was something stuck in the pickup.
I would bet that the problem will return and it may well happen when you need your engine most (that's usually the case).
I would recommend having your tank power flushed. It could just be that you have a lot of sediment or algae in the tank.
I would also recommend getting yourself a small hand vacuum pump. Put vacuum on the line that attaches to the tank. It should hold vacuum. If it doesn't, you have an air leak in the lines somewhere. If it does, you don't have an air leak in the lines. It's as simple as that.
The next thing is to check for an air leak in the pick-up tube (inside the tank). Get a 20" long piece of clear plastic hose and attach it to the tank (where the fuel hose attaches). Draw the hose full of fuel (holding the hose straight up. Plug
the hose securely and the fuel should stay in the hose. If the fuel level lowers, you have a leak in the pick-up tube.
From what you've said, my money
is on sludge in the tank.