New rebuild has odd vapors?

PCV on one side vent on the other?
Ok, to answer a few questions.
Plugs look great. No residue.
PCV on pass. side. Capped on drivers side. ( I do have a vented cap I can try).
Trying to tick off things one by one, I'm going to:
1. replace dist. cap (should have done this to begin with)
2. drain small amount of oil to check for cooolant
3. borrow/purchase a radiator press. tester to check for leaks at head (radiator is brand new)
4. do a leak down test