I'm afraid now something is really wrong <img src="/forums/images/graemlins/frown.gif" alt="" /> Monday everytime I stopped at a red light it would start running rough and felt like it was only running on three cylinders. The last time it did that (73,000 miles) I replaced the spark plugs and it ran fine. So I went and bought spark plugs and when I pulled the #4 plug boot the bottom half of the boot was covered in oil. When I pulled the spark plug out the entire thing was covered in oil. So my valve cover gasket is leaking right there apparently. I drove to work this morning (8 miles) and when I stopped at the redlight to turn in to the parking lot the damn thing went to running on 3 cylinders again and it was putt putt putting and chugga chuggaing all the way into the parking lot. I also changed the oil last night and that didn't help the ticking. Also my check engine light has been on constant for 5 years and this morning it started flashing <img src="/forums/images/graemlins/frown.gif" alt="" /> The truck never ran hot and no other lights came on and its not smoking from anywhere?? I'm worried about this. Any ideas??? It's a 1999 rodeo S with 2.2 and 5 speed.