What would cause a fuel leak? on 1990 Nissan Pathfinder

My Pathfinder always smells of gas, and when I look underneath, I can see a puddle of gas. What are the most likely causes of a gas leak?

4 answers 1 comment
There is a rubber hose on the 3.0L V6 that leaks. It is on the front of engine, between the two injector rails. I just had to replace one on a 1992 Pathfinder. Hope this helps!
what from the tank there is a tube and the rubber want seal
There is a recall on the assembly from the fuel tank to the fill up spout.. They will fix it for free
the filler tube between the filler hole to the gas tamk
what would cause a fuel leak?