im getting ready to change the plugs on my 04 4.6 since she is at 97,000 and has a slight surge at low rps. i know that the 4.6 plugs dont break like the 5.4 but i have read that a lot of times the boots on the COP's break if your not carefull. is it a good idea to just go ahead and replace them while they will be off? what type should i buy and where? also i assume i should use nickle anti-sieze on the plugs? i have also read to put some kind of grease on the boots when replaced so the wont stick? Thanks in advanced
Brett

 

First, the COPs are probably ok, but yes, the boots need changing. You can but the boots separately but for about $40 more, you can get teh COPs with boots off ebay. I would get the COPs and save your old ones for spares. You do not need antisieze with the 4.6 but you do need to use dielectric grease on the boots.

 

ok thanks what do the plugs need to be torqued to?