Help! After years of having no problems refueling, fuel now spills back when refueling. Need help in resolving this issue and a detailed description of the parts of the Enviro-fill system and how they work.
Tom, thanks for responding, however on my boat I have an Ameri-Kart 28 Ga.tank with 5 ports (3 of which I can identify) , but the other 2 I can't. The 2 smaller lines off the fueling neck are the 2 that I am interested in knowing about, as to their purpose. When I disconnect the larger of the 2 from the tank, fuel comes out of the barb, which is unusual as the tank is only a quarter full. Has the tank somehow been pressurized? By the way, the tank is equipped with the Enviro-fill system.