Driving home from work the other day the car started a miss. A VERY pronounced miss that I could feel at 50+mph. Once I came to a stop the car was romping(stumbling) pretty bad. I had the codes read and it's po174 bank 2 lean. I wondered if it was a COP so I took the covers off and pulled the front COP on the drivers side and the spark plug well had quite a bit of oil in it. Could this have fouled the spark plug?