Owners with outboard powered boats have lived with portable fuel tanks for years, but recent well-intentioned efforts to stop smog-causing gas fumes from escaping by eliminating the familiar two-way vent is causing new concerns. Without a vent – typically a small screw type fixture on the tank’s cap or top – a portable tank can swell up like a balloon in the hot sun with the internal pressure forcing gas into the outboard where it can spew inside the cowling, eventually dribbling out. It’s a wise move to install an inexpensive fuel-demand valve in the fuel line that will prevent any gas from reaching the motor unless the motor calls for it, and BoatUS has a video and easy to follow instructions to show you how. Read More
