On Tue, 27 Nov 2007 17:22:36 GMT, "Dave Isherwood"
wrote:

Boat is a Carver 530 Voyager and with two vents on either side. When I fill
(even using a normal slow pump) I get diesel fuel venting. Yesterday I had
to add 200 gal. to each side and venting started after I'd put in 10 gal.
I'm at a lose to understand why this is happening. Foaming seems unlikely as
it would need to have filled 50% of the tank!

What is probably going on is splashing as the fuel stream encounters
that already there. Perhaps a hose that makes a snug fit over the
fueling nozzle, and reaches down to the bottom of the tank. No more
splashing fuel onto the vent openings. Sounds like a bad design.

Casady