That's exactly the point I'm trying to make also.
Defective filter. Bad inlet check valve.
Also, make sure the seal didn't remain behind when the original filter was taken off. You may have doubled up on the seal.
It's the filter..
He has already removed the filter and it still won't pump.
Ergo not likely the filter.
Not likely the shaft because he squirted oil in the pump and it shot back out when he turned it over but just friction could turn the pump at that speed so...
The pressure relief valve could be hung open but seems unlikely as once you remove the filter you remove the engine as a restriction so at least some oil should come out of the pump. Path of least resistance and all.
It is not unheard of for a BB Mopar oil pump to just lose its prime.
If it was mine I'd pull the pump off and dismantle it. You can then eliminate all the guess work in a few minutes.
If the end of the shaft is in the pump, bingo.
Regardless, pull the pump apart and inspect the relief valve to see it's not stuck in its bore or the spring is broke and if the shaft was broke, what found its way into the pump to lock it up.
Pull the rotors out of the pump and check the body for scoring and wear. There's a rotor clearance spec in the FSM. It's just a few thou so if the body is all scored or the rotors can be made to more than just detect movement, the pump is worn out and that is likely why it lost its prime.
If everything looks marvelous, pack the rotors full of white grease, put it back on and do the prime with a drill drill and see what you get for pressure.
If still no pressure then it's time to drop the pan and see what has plugged the pick up.
Kevin
