lotsofspareparts wrote on Mon, 29 September 2014 17:40

Can't comment on to much, but can state that the alcohol in modern ethanol fuel will attract water. The best way I know how to get water inside of a steel fuel tank is internal condensation. Seems as though the front tank may get fuel pulled from it more often than the rear tank.

The only way to prevent this type of condensation is to keep the tanks full when parked for extended periods of time.

I fuel up when we get home from a trip.

Jared

Rear tank is main and should be the one that fuel is pulled from most of the time. Seems either the tank selector switch is on Aux, or the valve is stuck there. If fuel never gets pulled from a tank, it would take YEARS to accumulate multiple gallons of water, even if the tank was empty AND parked in the South where humidity is high. I had a riding mower that sat for two years with the tank half full and it accumulated a couple tablespoons of water. Enough that it wouldn't start, but easy to remove.

Either it has been accumulating for a long time, or someone poured it in your tank. Remember, when filling, most of the gas flys by the front tank until the rear gets mostly full. It might have got there from a fillup at a station that had water in the underground tank.