altune

I am working on a 98 v6 ranger and it has white, smoke out the exhaust, and oil in the rediator. I did s compression test and found cyl # 1 65 psi and # 2 90 psi, # 4 is 65 psi also.
Did a leak test on the cooling system and it could not hold pressure for less than 30 seconds and no external leaks. I removed the rockers and put air into each cylinder trying to figure what side of the v 6 was blown head but only got leaking into the crankcase due to rings.
wondering if anybody has seen this before. There is no coolant in the oil and the spark plugs seem pretty clean.
Engine runs a bit rough also.
cracked head or ???? Blown gasket ?
not too experianced with these and need advice before I pull the heads.
thanks guys
Al