Finally got my head back on and put everything back together. Fired it up and now water in oil (oil is milky color). Did compression checks which was about 150 psi. Pulled the head back off and no water in cyls. Head gasket looks good. What other ways could cause this and how could I check to see how this is happening? Would not think a cracked block or head since I didn't have this problem before. Put on a new intake gasket, so I would think this to be an issue. Are they any tests I can do to?