Hello All, I'm continuing the thread started as Water Pump Noise, which turned out to be more serious and elusive. I finally pulled the motor today, and pulled the main caps. All bearings looks good except number 3, the thrust bearing. It looks worn, almost like rotating dry. This could be the source of the screech...I could not find any other source...oil pump looked good. Any thoughts? Where you see the smooth areas, it really is smooth, not a reflection.