Averaging 19.9L/100KM or 11.8 MPG encouraged me to do this. I also changed the air filter as well (can't believe how cheap these are!).














I pulled all the plugs on the drivers' side with a 1" + 3" wobble extension, and ye olde 5/8" plug socket.

As you can see in the last pic the previous owner/mechanic decided to use lithium grease to 'lubricate' the boots, which in turn melted the boot to the plug.

Moron.

That just cost me a coil pack and a car rental. Of course it happened on #7 cylinder, next to frickin impossible. I spent an entire hour pulling the remnant of the plug boot out.

PITA, but at least now I know it's done correctly.
Dielectric grease on the boots and a dab of engine oil on the plugs.

The passenger side is made somewhat more challenging by a metal pipe that runs over top of the coil packs. Remove the air box cover, inlet and pcv line to gain access. You can gain some more room by pulling the battery and the box, but little useful space would be gained.

Again, all spark plugs pulled with a 3" wobble and 1" extension. Killed another boot on cylinder 2, but re-used the last good boot from #7.

It runs so smooth and silky. Well worth the effort, hopefully the fuel economy will return some of the investment costs - plugs were $36 with tax, coil pack $44.

A couple of useful tips:

You need compressed air for this job to blow out the spark plug holes. If one of the c.o.p. doesn't seal correctly, the resulting corrosion will head right for the combustion chamber.

Set aside 3 hours minimum, no kids / no wife nagging.

Natural light is really beneficial with all of the black surfaces under the hood.

A fender apron is a must.

A make shift prop rod helps tremendously with the passenger side.

 

I'm going to add a separate post for this. Go ahead and pull the battery if it has the insulation wrapped around it like mine does. The itching is unreal.

 

I fish with a guy who's a big natural Light drinker...imagine my 1st thought.

our 08 went from 12mpg to 15-16 (depends on who' driving). When I drive I like to see how long I can keep the fuel saver mode on...the wife.."it has a gas peddle and a brake...what more do you want from me?"

I notice zero diff between 87 and 89 fuel...so we run 87. Some day when I can stomach the 500$ I'd like to put get a Hemifever tune...dreaming of a day far far away.

 

Ray:
Congrats on tackling the job and getting it done. I did my the plugs on my 04 Hemi a few months back, and put my write up on another forum I frequent.
The dealers get $$250-$350 for this service which is worth it I guess if one does not have the patience, time, or tools.
My plugs at the time had 50K on them, and were in the .052-.056 range. The D ran fine with them.
At the same time, I went back in with a new set of OEM plug wires as I was not going to put 10 year old wires back in there.

Don