Problems Filling Boat Gas Tank

Shortly after i had a new fuel tank installed i discovered a problem a boat gas tank vent problem.

Problems filling boat gas tank. There s no other way to work out when my tank s full as i have no way of determining how much fuel is in the tank to begin with. Taking a look on the outside of the hull and seeing if the vent is even there if it is corroded broken or upside down. The first time fuel is introduced to the a fuel tank be aware of the interaction of cold raw fuel vapors replacing air on occasion a vapor pressure can occur producing spit back anomalies. The fuel tank vent is located on the outside of the boat normally relatively close to the fill port on the gunwale of the boat.

Pressure may be present when opening your deck fill regardless of system type. Then i could fill up just fine. Since it s not pressurized filling it can be more troublesome. A boat s gas tank is different from your car s gas tank.

Original equipment manufacturers mechanics and boat dealers as well as the american petroleum institute the steel tank institute and other well intentioned professionals have offered widely differing opinions in the past on whether to leave tanks full or empty during storage but recently they have come to the same conclusion. A boat fuel tank overflow can be caused by a clog in the vent. It s already been determined that the issue with a lot of boats is the vent tube not providing adequate vent while filling causing the gas to back up. Knowing the tank can t possibly be full i keep working on filling the tank at a rate of less than a gallon per click until 10 12 possibly more gallons later i see gas come out of the tube.

Owners should only open the fuel cap for refueling. It was difficult to put gas in the tank. If fuel gets into the water you can get into trouble quickly so you can t continue to boat with a small leak. The nozzle continually shut down as if the tank were full until a gusher of gas spewed from the vent.