I just filled my front tank up for the first time the other day and brought it home and parked it. (On a slight incline) The next day I went out to get in the truck and smell gas really bad so I crawled under the truck and my tank was leaking from the top. There must have been at least a gallon on the ground. I was just wondering if anyone would have any ideas on where I might find my leak.(Haven't droped the tank yet) It seem to me like it would have to be the inlet hose coming from the cap to have leaked that much wouldn't it, or do the gaskets around the pump normally go bad??? And by the way I think my pump in my back tank is fried..

89 f150,300i6, duel tanks

 

Normally it is the rubber o-ring gasket between the tank and fuel pump hanger assembly that goes bad. I've also seen cracked tanks. You'll have to drop the tank (or take the box off) to determine the issue.

 

Or you could just wait & pray for "Emaculate Confixtion"!