Re: 2002 Ford Expedition
If this keeps happening, I would suggest from 6 plug blowouts, 4 from the same two cylinders, I've done this enough. Go to amazon and order the Ford Triton Spark Plug Kit, I forget the name off hand. It's around the $400 mark, but it's cheaper than $250 a cylinder, or a new head. I used this after #4 went twice, once last summer and once on Xmas Eve. If you search Misfire From Hell here in the forums, my post is there from when #4 actually detonated the plug, and melted the Coil, w/ pix. I have a 2000 4.6 so I know how much of a headache this is.