ORIGINAL: bruce88123
Maidened a plane for a guy this weekend. He had this problem. Tank was upside down so vent tube was at bottom of tank. Flipped tank and all was well. Well, actually we then moved on to his other problems.
I've never had this problem, at the field!

Sure is a good thing I always start the plane at home at least one time, helps avoid being embarrassed by having others see this kind of oops.