19 foot 2003 polar center console

[Destroyer]

The laws of physics are absolute. If it's not venting then there is something that is preventing it from doing so. If at all possible run a length of wire through the vent hole to pierce whatever is blocking the line. If that doesn't work and you have a compressor then remove the gas cap so you don't pressurize your gas tank and then use an air gun at the end of the airline to try blowing high pressure air through the vent line. Presuming that it used to vent then my guess is that a bug of some kind has built a home in your line over the winter and it's now blocking it.

[steplift20]

The vent line is not blocked cause it pushed the gas out of it, when the tank expanded, I think the vent line gets blocked by gas when the now is higher than the stern, but that's so the water would run off the back, is there a gas cap that is vented? I would like to know if anyone else had this issue going on I think a vented gas cap would solve the problem but do they make one? I D K Thanks

[phatdaddy]

Which end of the tank is the fill & vent on? Should be on the bow end next to fill and pickup in stern.

[THEFERMANATOR]

My only guess is it may have a vent that closes when liquid enters it. A vent normally will just let gas come out if you overfill it, but I don't know if new vents may close off when liquid enters them to prevent fuel spillage. All of my past boats would just push gas out the vent if they were overfilled.

[steplift20]

Phat I believe the vent and fill are by the stern of the tank And we can't get to the tank, there is no access to it , not like my wellcraft where I can take the panel up So I don't know if and how to fix the pfoblem

[phatdaddy]

well, there's your problem

[THEFERMANATOR]

You have to cut the deck open to get to it, hence why most go back with deck mounted tanks.