What I notice that concerns me is this: when I first turn the car on and the engine is cold, I hear a ticking from the engine that sounds almost like metal on metal. However, once the car warms up a bit the ticking disappears at idle. If I give it gas, I can hear a slight ticking (although not as pronounced as the previous sound) as the RPMs die down. I got my valves adjusted about 3000 miles ago and the noise went away for like a day, but now everytime the engine is cold there is a loud metal on metal noise coming from the right side of the engine right underneath the valve cover near the belts. I thought the valve adjustment would cure this, but unfortunatley it didnt help. So i was wondering if any of you guys would know what is causing this insanely loud ticking noise. Any input would be greatly appreciated!

P.S. I drive a 2001 Honda Prelude