I bought a Ford 1220 at a auction. It had 1400 hours on it. First thing I did (except for driving on and off the trailer when I bought it). Was park it in my garage and saw no oil on the floor under the tractor. Before I mowed for the first time. I change all the fluids and filters. I used Rotella Oil and New Holland filters/ Hydraulic fluid. Problem is I am getting some oil out of the tube that I assume vents the engine like a PCV valve. Now everytime I park in the garage there is oil under the tractor. I can feel pressure out of the vent hose while the engine is running. Also I can feel pressure out of the oil fill tube with the cap off. The engine starts and appears to run fine. Allthough it seems under powered. (first diesel, nothing to compare to). I have rebuilt many gas engines and trannys. But I have never touched a deisel. Looking for advise on how to measure compression or where(without taking to a dealer) to start. I might add there is a small amount of smoke out of the exhaust on startup. But while running there is very little if any smoke out of the exhaust pipe. Thanks !!