Tell me MR Greese, how is it that their is air bubbles in the small filter and fuel line, before the pump, yet you remove the one piece sealed filter on the suction side and their is no air bubbles in the line between the small filter and pump.
And by the way, where did you get the idea , I was useing Festo fitting, do you see Festo fittings, Their are no festo Fitting.
Rcpete