I am all hooked up and have the full line off at the filter houseing and I cycle the key and the fass only starts for a moment then it stops can noit get full out of the line .do I have to crank the engine over?

 

dont know what gen truck your talking here , but if it is a second gen , and you have the fass wired to the same lift pump power supply from the ECM , you need to bump the starter and you will get 25 seconds of power to the fass,

 

I think Kully has a 3rd gen, same rules apply though... do what John mentioned, just give it a crank as if to start it, and come back quickly. You'll hear the FASS running, eventually you'll hear the fuel go all the way up (at least I did on mine).