dodge guy wrote:
The big thing is to remove them on a warm engine (not hot). crack them loose, put some WD40 down the hole and let it soak into the carbon for a bit. when the carbon is cold it acts like cement and will not give which is what breaks the plug in the head!
The head/plug design is more than reason enough that I will never buy a 3valve triton..... well maybe if I did I would R&R the plugs about every 30k miles, clean them and put them back in.
I've read the service bulletin and several other real life accounts, some from Ford mechanics. Opinions vary as to the temp of the engine. All say NOT hot, but possible warm and cold are both popular. I have a heat gun, so I may heat just the hole of the plug I'm working on. The aluminum should heat quite a bit more quickly than the steel and give some extra wiggle room, but I think I am going to try to break them loose and spray them over night. Not sure I'm going to use two steps. A lot have taken them out with a small impact also. Seems the shock wave breaks them loose sometimes where constant torque doesn't.
