Yeah the car had 208k miles when I bought it. I don't seem to be loosing oil, but I am getting some heavy smoke when I press the accelerator. No power and lots of smoke :p I will definately check the rocker assembly. I noticed when pulling the valve cover that the metal plate on the inside of the valve cover had a hole pressed in it, almost like a lifter raised up and hit it real hard, maybe accounting for the loud clank noise I heard initially. Is this something possibly caused by the loose threads? Thanks, a bunch, you all have given me a lot of things I can take a look at.