Rebuilt Engine, Super Low Oil Pressure :(

Dart_Doctor said
Now are you sure you have the right pickup tube ? and did you check that it was not resting on the pan ? silly putty works good for that lol

I used the one that was in it before the rebuild, and it had good oil pressure. I didn't check the clearance, but I do remember it didn't thread all the way back in, but stopped turning so I assumed it was where it should be.

Charrlie_S said
Possible crack in pick up tube, sucking air? Also check pressure bypass valve in pump, might be stuck open, or even missing.

I will check, crossing my fingers its as simple as that.

PoisonDart74 said
Did you plasti-gauge the bearings? If they are too tight, well, oil is gonna have a hard time flowing to say the least.

Did not plasti-guage. Didn't think it was necessary. Is that standard or overkill?

dano said
When you installed the gauge, did you use a new sending unit?

No, but I replaced the sending unit with an electric gauge to make sure it wasn't the sending unit, and it confirmed the low oil pressure.

mwls73duster360 said
I always take apart my pumps before putting them on. Every one has had machining shavings in them. Just an idea, it could be the problem?

Another possibility I will check into. I didn't dissassemble it.

805moparkid said
now that you say that it got me thinking... when they returned you the motor and or parts what was the deal? you assemble? was it assembled? I ask because if your assembling it you need to do a final clean on the block and parts as well as gauge everything.

I assembled. I did a wipe down and blasted it with compressed air, but I didn't clean the new pump I put on.

If shavings were to accumulate somewhere, is there a spot where they would generally accumulate to create blockage?