I'm looking for some advice on an issue I'm having with my fuel system. I have a 23' Novi lobster boat with a 65 gallon SS tanks located in the deck under the wheelhouse. The fuel system does not appear to be vented. When adding fuel it backs up into the fill hose and wants to over flow. It takes a while and eventually settles into the tank. When I try to start the Suzuki 225 4stroke (2007) it acts like it's fuel starved. It will turn over rev and stall. I can get some fuel to the ball but it seems like the supply is not constant or interrupted at the fuel/water separator. I usually drain the filter and pump the primer and she'll start but right now I can't get any gas to the priming ball. When it's started it runs great but it's become a frequent issue. Any suggestions?