No oil to top end

wes beem said
SOLVED SOLVED SOLVED

For ***** and giggles my friend rummaged through a scrap metal bin and found a 20+ year old used original one, installed it....truck instantly makes oil pressure and the chatter is gone.


TWO BRAND NEW PUMPS IN A ROW, DIFFERENT BRAND, DIFFERENT PRICE TIER WERE GARBAGE NEW IN BOX ON ARRIVAL.

200+$ worth of lost fluids and gaskets later.... I don't want to live on this planet anymore.
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It’s not worth doing now, but I’ve had some newer pumps hit the rear counterweight and it will hold the pump off the main cap.

I never found one that would turn over but the pump doesn’t have to be off the cap very far before you won’t get enough volume to make any pressure.

Its like when they machined the casting where it bolts to the cap too far.