I just pressure checked my rebuilt motor, it leaked out the case vent. I put my finger over it an it seemed to hold pressure.
I talked to a couple people to get clue as to what to do.
One builder says that if you have fresh o rings on the power valve it should hold pressure.
Second builder says that the power valve will leak. Not to worry about it.
First builder says block off the case vent to see if it holds pressure. 6 lbs for 6 minutes.
Where is that shrugging smilie?