HELP!!!! Leaking fuel

My '92 B2200 is leaking fuel it is coming out from right under the front of the box when I look down there I can see a black line connect to my frame above that there is a white cylinder and then the fuel pump. Any ideas what it is that is leaking? And how do I fix it? I need to be back home TOMORROW and can't go anywhere.

***UPDATE*** motor is gutless and won't go over 80km/h

I think your power loss and fuel leak are related.

See this to see how to jack up and tilt the truck bed for access so you can see exactly where it's leaking.

Have a look under while someone else primes your system by turning the key to the on position multiple times