Okay, here's the story, I bought new Ford Racing wires and NGK Iridium 55IX (Is that right?) I cleaned the uim and lim while I had the upper off and now when I start the car there is a loud, really loud, clanking noise coming from the left rear side of the engine (might be under the valve cover) I double checked the wiring, took the plugs out and re inserted them (they already had black residue on them and I hadn't even driven anywhere) still had the noise so I took everything of again and took of the valve covers but everything looks okay but I don't know what I would be looking for. Any ideas? I'm startin to get a little pi**ed. Thanks for the help.