I was just starting out on a nice weekend, planning to do a little spring maintenance on my '05 F-150. The truck had very recently begun to exhibit signs of a misfire so I slapped the ol' code checker on her and, sure enough, there was a misfire in cylinder 2. I proceeded to aquire the needed new parts and began to remove the errant plug. However, something odd, aggravating and even impressive happened. The plug didn't exactly break, as I had actually anticipated. The thread collar let go of the ceramic and 3/4 of the plug came right out - leaving the threaded collar behind in the well. I called my mechanic who's only response was to laugh then tell me I'm screwed... I plan to attempt using an EZ out tool, but I am apprehensive about ruining my motor. Any thoughts or ideas?

 

Look for youtube videos on how to remove that broken plug.

There is a tool for it, and good demonstrations of how to do so.

Two channels in the preferred order
Fordtechmakuloco (has done a few demonstrations of how to properly use the tool and in both broken plug cases that are common).
SouthMainAuto

 

Sounds like a 3V with the two-stroke style extended plugs. The shield builds up carbon on them and they won't come through the hole and the plug snaps.

Once you get them all out put nickel antiseize on the shields when replacing. Then remove the plugs once a year and reapply.

My buddy says s 150 horsepower shot of Nitrous Oxide in his Mustang 3V keeps them nice and clean but that might be a bit more extreme than you plan for.

After getting out the remnants with the tool I've always vaccumed everything out then turned it over (make sure you disable ignition) without the plug in it to blow out any remaining ceramicc and I've never suffered any long-term issues on the 3V I've changed plugs on.