I have a 94 civic Dx. I have been having problems with it overheating and now it is putting a little smoke out. I changed the thermostat and a couple hoses and cleaned out the radiator. I thought I messed up the head gasket so I did a compression test. Three cylinders gave compression of 125 to 135.......but the last spark plug I pulled out had a little bit of oil on it. I did the compression on that one and it read 160!! ???? I have no idea what is wrong with this car.....can somebody give me a direction to go in???

Also two months earlier my girl kept thinking it needed oil and eventually over two weeks put in three quarts over!!!! I changed the oil and pcv valve but I think that might of had a part in it too...