2006 LBZ, mods in my signature. Stock fuel system but have the Nicktane adapter. Getting air in the fuel somewhere, I'm assuming at the fuel filter head. Changed the fuel filter (use the Donaldson fuel/water separator) and rebuilt the head with all new o-rings. Every time I go to start the truck it starts fine, will run for a minute and shut off. go under the hood, leaving the bleeder screw tight and pump the pump on the housing until its almost too tight to push. it will finally start again and then does fine. anybody have any ideas or suggestions on where to look or what to try. I guess my next step is to buy a stock fuel filter and give that a try and see if it's the nicktane or something else