Truck Repair: Oil presser in Ford F-150, ford f 150, main bearings

Question
I have a F-150 1990 150.000.000 miles

The Oil presser is low but not to the red limit.

Could it be the Oil pump or something else.

Answer
Bryant, it could be the pump or the rod and main bearings could be worn out. first, take a reading with a manual gauge to be sure it has low pressure. then make sure the pick up tube isn't plugged with sludge. check the rods and mains and the crank before you put the pan up with a new pump. you might be wasting your time.    good luck


Rusty