My Engine seems to have excessive crankcase pressure but only after it's warmed up. I checked the compression cold and it had 150,190,175 and 140, the 140 was on the #1 cyl. When the engine is warmed up it will blow oil thru the pcv into the intake and it will fill the air cleaner up till it runs out on the ground. I used a quart and a half of oil in 30 miles of driving and it doesn't smoke out the tailpipe. If I pull the pcv valve out of the tube it doesn't blow anything when cold but when it warms up it starts to blow. If I drive it a few miles and pull it out there will be oil in the tube. Do you guys think it's just blowing by the rings or do you think there is some other problem with this thing? Seems like if it was the rings it would blow all of the time not just when hot. The engine has dropped a valve seat before and they said one of the pistons was damaged but they only replaced the head and not the piston that was damaged.