I put the mechanical gauge in place of the oil pressure sending unit, needle pined to 200psi when started the engine .
tried the another PRV ,same thing. Bearings are good, double checked
only replaced all oil seals in the oil pump. Not much to mess up here. 2007 F150txr . plunger is inside the oil pressure regulator. Its just spring operated plunger , part num
RELIEF VALVE ASSY
63P-13490-00-00
Blowing oil filter seal after rebuilt. oil pressure 200 psi. crank bearing clearance is perfect. all passages clean and spotless. This is driving me crazy
Pressure regulator plunger is fine,nice and smooth.
i dont know what to do , Please help anyone