So as the title says I've got oil coming blowing out the fill cap and when I took the cap off I noticed some white substance underneath it and a little inside. Dropped the oil an it was clean as could be. I've recently replaced valve cover gaskets,oil pan gasket , timing cover gasket, crank sensor , injector o rings, purge solenoid valve, egr transducer. It has a slight shake when idling as well. No codes coming up either. I'm at my wits end trying to get it figured out. Any info would be greatly appreciated.