When I was pumping gas the other day, the gas cap hit the ground and rolled under the car. I went to get it and noticed there was gas leaking from what looks like the filler tube and riding it down to almost the gas tank, it stopped leaking as soon as I stopped the pump. My question is could the filler tube have a crack in it or is there a connection between the filler and gas tank? Could the tube be rusted? I can't crawl far enough under the car to see exactly where it's coming from, thanks in advance for any help!