after a few weeks of trying to trace a fuel leak i found that it was the return line. at the back of the head there is a banjo fitting that is leaking. i put 2 new factory seals in it and it still is leaking just as bad as it was. anyone have any ideas? the truck is an 01 auto if that makes any difference.

 

you may need to replace the entire fitting. . .if that doesnt work I would hate to say it but you may have a crack where the banjo fitting mounts.