Yesterday, the fuel company called me and said that after they fueled up my plane, it started leaking onto the ground. I rushed out to the airport and sure enough, it was dripping fast out of the left main tank's vent - but, it was the left tip tank that was loosing fuel. All of the other three tanks were full to the brim, but the left tip was down about 2-3 gallons, and that's about how much was on the ground by the time I got there. I played with the selector, and it stopped when I selected the left tip tank. I don't have a service manual, and the POH diagram doesn't say anything about the vents. Any ideas?
