Gas tank on pontoon ????

[tommytoon]

I bought a used aluminum fabricated products 18 gallon tank. I put a new sending unit in it and

cleaned all the fittings for the gas line hookup and new teflon tape. Now to the question the tank has

a breather tube about 3/4", should i block that tube off so i get pressure built up in the tank or do i

need a breather that large. A 2 stroke 75 hp mercury outboard is the motor i have. Any answers to my

problem or stupidity lol!!! Would be appreciated and thanks in advance. I tried the company phone but i

think they are out of business thanks in advance

tommytoon

 

[Treker57]

Re: Gas tank on pontoon ????

The tank needs to be vented, not bring vented the motor would no be able to draw fuel

 

[5150abf]

Re: Gas tank on pontoon ????

DO NOT block the vent, gas expands and contract at a pretty good rate and the tank needs to be able to ventso you either couldn't get fuel as Treker said or it woudl be getting pushed to the tank.

 

[tommytoon]

Re: Gas tank on pontoon ????

thanks admiral and treker i thank you for the feedback and a breather filter is next on my list !!!!!

 

[Treker57]

Re: Gas tank on pontoon ????

Sorry for the spelling above

 

[MH Hawker]

Re: Gas tank on pontoon ????

Boat fuel systems are not designed for pressure.

 

[MinUph]

Re: Gas tank on pontoon ????

thanks admiral and treker i thank you for the feedback and a breather filter is next on my list !!!!!

My tank's "breather" is just an overflow. It has a section of fuel line that empties into the water through the floor. It never has expanded enough to do that but the reason I write it is terminology. It is a overflow vent not a breather. And by all means needs to be open. I don't know that a filter is needed.