Mazda Rebuilt engine finally got oil pressure

Aug 19, 2015 • Update:

This morning (19 Aug 2015) I talked to "Brian" from ATK Manufacturing. After discussing the situation with no oil pressure even after cranking the engine with the starter. He told me this engine should not have come with an oil pan and therefor there was no issue removing it to inspect the pickup tube and prime the pump manually. There was quite a bit of information shared between us and he was very helpful and professional. (Unlike the the first Clown "Eric Smith" I talked to the day before)

So I drained the oil from the engine. Rotated it 180* on the stand. Remove the oil pan, and pick up tube. Everything looked good but I couldn't see any oil inside the pump. I poured about 1/4 of a quart of clean oil into the pump a little bit at a time stopping to rotate the engine each time it was full to pump the oil through the engine. Then I replaced the pickup tube and did the same thing this time filling the pick up tube itself with oil.

After pumping about 1/2 qt of oil into the pump I replace the oil pan and turned the engine back up right. I filled the crankcase back up and turned it by hand with a breaker bar. Within about 10 rotations I could hear the oil squirting out of the lifters. Success!

(by ATK Manufacturing) Mazda 3.0L V-6