Fuel tank vent

[changer]

Hi, ( new to me) I have an '85 A27FC with a 70gal fuel tank. Having a lot foaming occur during refill operation. I can only find one way to improve venting and that is to temporarily remove a 5/8" dipstick port on the top of the tank. Can not find any installed vent to clean or replace. Doesn't the tank need a vent to replace used fuel with air? How is that arranged? May be right in front of my nose, but can't find it.

Appreciate some guidance from you...thanks, doug

[DesertAlbin736]

Can't help much, but the fuel tank has to have an overboard vent as well as a return line from the low pressure side of engine's fuel system in addition to the fuel supply line going from tank to engine. Can't imagine there wouldn't be one. That overboard vent has to be somewhere, usually exiting the side of the hull near the tank & just below the deck, usually with the opening covered by a screen. Maybe that vent line is just clogged somehow/somewhere? Keep looking!

[Beta Don]

There is definitely a vent. It's required by the Coast Guard and it must be 5/8ths hose. On my 27 it was on the port side, just below the rub rail and just aft of the aft engine bulkhead - But, mine was an early boat ('84) and Albin made changes as the years went along, so yours may be in a different place, but it will certainly vent through the hull to the outside

I had the same issue as you did (my boat had sat for several years) and it turned out that insects had plugged up the vent hose with mud

Don

[changer]

Thanks All... guidance is appreciated... on to discovery. Maybe bugs ?!

doug

[rnummi]

Mines in the same place as Don's with a similar looking water vent next to the was down spigot front of port cockpit seat.

[changer]

Thanks all... found the hose vent... clogged with "old bugs" I think.

best. doug