never hear it mentioned but none of you guys ever just open the fuel drain after pump changes or filters to let the air bleed from the system?
open the drain ...bump the key for the lp to run. close drain. no excessive crankin or messin around opening lines. no mess all over the engine either

works everytime for me.
even when i ran it bone dry outta fuel...on I-75

 

No need to on the self-priming 3rd gens...

 

I just crack the bleeder on my FP guage isolator. Works great and no mess.