I broke off a plug when trying to change them, and am now in a real mess. I can't use the suggested removal application as to tapping them then trying to remove it, as I can't seen to get through the porcelain.
If anyone has a solution for this removal please let me know, and thanks in advance.
I have read the aeticles on this and it seems to be what should be a simple venture turn into a damm nightmare, not to mention the cost.

By the way its a 2005 with the 5.4.