need diagnosis of clicking noise (video)

anyone know what this is? http://www.youtube.com/watch?v=UlEqtjcG0lw&feature=youtube_gdata

id check for exhaust leak ie egr or tube
i'd also check for compression leak ie loose spark plugs

I think this is dislodged, they easy to replace?

http://cgi.ebay.com/ebaymotors/Motorcraft-Ignition-Coils-Ford-Crown-Victoria-DG508-/150471316273?pt=Motors_Car_Truck_Parts_Accessories&hash=item2308ca1331#ht_500wt_956

That is a Coil-On-Plug (COP). If a COP is dislodged and the noise is coming from it, you blew a spark plug. Chances are that you need to install a TimeSert so you can install a spark plug again due to damaged threads. Installing a TimeSert leaves quite a bit of metal shavings in the cylinder if you do it with the head installed. It would probably be easier to just swap in some junkyard heads.

But again, that's if the plug threads are damaged.

thanks. So, you're saying I need to find and buy a totally new cylinder head and purchase a Time Serts kit? I know how to use tools and whatnot but is the average dude really qualified to be repairing threads and replacing a whole cylinder head? sounds like if I F it up I could create larger more serious problems...what do you all think? worth it to take it to the shop or should I learn how to repair it this time around?

also, how would i figure out if the threads are damaged?

thanks, starting to come into focus...

-b

I said that the threads may be damaged if you blew a spark plug. Pull the COPS off. You need a 7mm socket, if I remember correctly, to remove the bolts holding them in place. Then disconnect the harness from them and pull them out. They have rubber boots so you can twist them past the fuel rail without removing it. Check for loose spark plugs. If you find one and it will not tighten or loosen properly, then your threads are damaged and a TimeSert is required. It can be done in that head, while still on your engine. But alot of metal shavings will get into your cylinder which is obviously not a desired thing.

An alternative is to install the TimeSert into that head but removing it from the engine to do it. While you're at it, you might as well do the other three ports on that head because the threads are weak on these heads.