I bought my 89 3.0L, pickup over this last summer, and it has had a valve tick since I got it. I have never paid any attention to it since I had a completely brand new rebuilt 3.4 motor at home. Well my truck finally decided that it is time for the new motor. I was going uphill on 6th avenue the other day and downshifted to 3rd cause I was slowing down. Nothing out of the usual with 35's and stock 4.10 gears. All of a sudden the valve tick got about 10x louder and I could feel it from inside the vehicle. I knew this was not good! I got the truck home after work and it has sat there until today when I finally got some time to investigate. The noise was coming from the drivers side valve cover. I popped it open and found this...