Changing spark plugs

If you have a 3.5L engine, replacing the spark plugs includes removing the upper intake manifold. The time listed is 2.1 hours which is quite a bit, so it's not an easy job. That time is for an experienced mechanic who has all the right tools at hand and knows exactly what to do.

The type of socket you use is up to you. I tend to break the old plugs when I use a socket with the rubber insert. Instead, I break them free with a socket with no insert, then use the insert if the plug is in a deep recess where getting to it is not easy. To install the new ones, I attack them to a piece of rubber vacuum hose and use that to get them started, then I use a socket with no insert to tighten them.