I have a 1993 chrysler fifth avenue with a 3.8 liter engine. There is
no oil getting to the left (#1 piston sice or side closest to firewall)
side of the engine. I took the covers off and the front is lubed fine,
the back dry and it sounds like a lifter, but not all the lifters could
have gone bad on one side, and none on the other side. There is no oil
pressure, tried replacing the oil pump but no change. What could cause
this? Oil pressure regulator of some kind??