18 Plat Screw, FX4, 3.5, 10R80, max tow, stock tune, Mishi CAC no louvers, Mishi rad, 40/60 cool/H2O
I thought maybe it was a check valve. But if so, it is plugged tight. I tried clearing it from both directions with the air hose and nada.I wonder if its a check valve so that when the truck is turned off and cools, air doesnt get sucked back in from the tank.
Maybe I will get a replacement hose from Ford and see if that solves the problem.