this is my first time doing an engine build so dont bash me lol. i was just wondering are you suppose to hear a slight his in the valve cover/ oil pan if you turn your engine over with a breaker bar? it isnt loud. sounds like its in the oil pan. does compression seap past the rings?

 

It's junk, start over.

JK, they all do this to some degree.

 

Yes, it's just air getting past the rings.