"Jaap Telschouw" wrote in message
...

I have water of condensation in the fuel tank of my sailing ship (I have a
Yamaha four-stroke outboard motor, which runs on normal gasoline).


If you have had water sitting in the tank for long, you easily could also
have a serious case of algea or sludge in the tank (don't ask how I know
this one) So you may want to look at the tank bottom contents more closely
before you rule out a pumpout solution.