How do you remove and replace the spark plugs in a 2000 F-150 with 4.6L Triton V8?

Answer 1

Unless you have super long arms it's a pain, but roll your sleeves up and you shouldn't have too much problems if you are short so cushion your knees and climb up into the engine compartment. first, you need to unbolt the fuel injector rack on each side of your head. no need to remove the rack just unbolt it because your can slightly move the fuel rack around in order to insert your spark plug socket and wrench extension. please take your time doing the change out. after your fuel rack is unbolted i'd start with the front and work your way back to the firewall. of course, doesn't matter which side you start removing your plugs. just to let you know, when looking at the engine from the front, the left side of the head is numbered 1, 2, 3, 4 and the right side is numbered 5, 6, 7, 8. so lets start with plug 1. carefully unplug your #1 coil pack and unscrew the coil, then move it to the side out of the way. use a 13/16" socket adapter and a 8" extension, and perferrably a 3/8" racthet. the plug is straight down, no angle so once you have your socket in place just remove the plug. at that point go ahead and replace the old plug with a new one, making sure that the gap is correctly set. then go ahead and install your coil pack and go to plug #2. keep doing this same thing but when you come to the rear plug (plugs 4 and 8), you are probably going to have to use a 6" extension or a combination of short extension because there is less room to work with getting the plugs out. but you'll get it with a little patience. just keep on until you have completed the change out and make sure that you plug your wire connectors back into your coil packs and also remount your fuel rack. except for the sore knees, you'll find that it wasn't really that hard of a job. good luck
forrest