Hello, About a week ago, when I started the Focus. I heard what sounded like ball bearings hitting the header. A squeak and rattle. I got it to consistantly occur at 1800 to 2000 RPM's. Sounds like its coming from the plastic intake runner but I could be wrong. Sounds like tin gears are not meshing..... Its driving me crazy. I have checked all shields and I just cant seem to figure it out. No Code and I dont notice any performance issues. It sound like a cheap P.O.S.Car! Help![bigcry]