On this 2001 Taurus, 3.0liter flex fuel 143k, there is a noise coming from the engine when I accelerate, this happens at high and low rpm's. It sounds to me like a timing chain rattle. Sounds like metal on metal. This worries me because I dont want this thing to jump time someday when Im driving down the road. Anyone ever had a problem with this? Is this something you can adjust on a taurus?