The camshaft seal behind the distributor was popped out and oil drained out the weep hole all over the rear of the enine. I replaced the seal (may have pushed it in a little too much -past flush with the engine block). I noticed, when the engine is running, that there is pressure in the crankcase when you open the oil filler cap or pull the dip stick. The dealer said there is no pcv valve but there is crankcase ventilation. How much pressure is normal and could this pressure (blow-by??) have pushed the camshaft seal out?? Any thoughts appreciated. Car is 1998 V70 2.5 turbo automatic with 204K - runs like a top!!!