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6.0 rebuild now no oil pressure
2007 f-350 6.0L 76,000+
Did a rebuild because lost compression in multiple cylinders. Engine is back in truck and hasn't started. The truck cranks strong just no start. No codes
There is no oil pressure at the rails. I have a mechanical gauge where icp sensor goes. The rails have new dummy plugs and new stand pipes. Oil cooler and seals have been replaced. I've tried multiple hpops. 2 from ford and 3 that I had sitting around but not sure the condition of (probably bad though, just running out of ideas).
I applied 150psi thru top of hpop while commanding ipr with a jumper. Didn't really hear any leaks with valve covers off.
I've checked oil level, oil flow into oil filter, oil in hpop reservoir, oil flow back to hpop from reservoir, visually inspected low pressure oil pump (gerotor). I'm running out of ideas so I'm hoping to get some outside perspective. I have many hours in this project and would like to see it start so any input would be appreciated.