Draining Water From Boat Fuel Tank

Whatever the reason removing fuel from a boat fuel tank is something that almost any boater can accomplish with a few tools purchased at any marina store.

Draining water from boat fuel tank.

Perhaps the fuel has been contaminated by water or another substance. A boat owner s nightmare. An owner might prefer to remove fuel from the tank for the winter rather than treat the fuel. There are several reasons why a boat owner might want to drain a boat s fuel tank.

You will not be able to see the gas. You need a large bucket preferably a five gallon one. All fuel has some small amount of water in it that s caused by condensation settling in the fuel storage tanks that are part of the fuel distribution chain. This will ensure that you get most of the fuel water out.

It s pretty difficult to get a siphon tube to make the hard turns from the fill to the bottom of the tank. The best method for siphoning fuel water is to remove the sending unit and siphon from there with the boat level. In order to clean your boat fuel tank you must first siphon out the gas that is left inside. Water problems in boat fuel sponsored boat fuel tank vent how to pontoon boats plete average pontoon boat weight with 60 china 7 5m quality aluminum pontoons diy fuel tank draining great lakes scuttlehow to clean a boat gas tank without removing it 4 simple sdo pontoon boats have drain plugs how to remove themdiy read more.

This moeller clear site water separator and filter allows you to see any water settled into the bottom of the clear plastic fuel bowl and has a large opening valve to drain the water out. With the separator shown in the top photo simply unscrew the canister and dump the water out. Remember working around gasoline can be dangerous. To drain my boat s fuel system i first shut off the fuel line to the outboard and then run it dry either in the water at the ramp or in the driveway using water muffs until it stalls after burning all the fuel out of the carburetor.

However depending on the boat and fuel system arrangement such filters may not be compliant with uscg or abyc standards.