Debated starting a new thread, but decided to tag onto the old one here. Had #1 glowplug fail on the wife's car and after being part of the tail end of my dad's nightmare original change, I wasn't looking forward to the possibility of the same, especially on a car we need everyday and having it down a few days while I futzed with it wasn't going to go over well.

#1 is the only one reachable without taking off the intake manifold, and I let the car idle for a few minute after a short trip while I got my tools out. By the time I was ready, the engine was definitely warm and I actually left it running while I broke the #1 GP free. (You can't loosen it much like that, so I just broke it free and then shut the engine off.) You can get at it with a 6-inch or longer extension. I used 1/4", but you could probably make a 3/8" work.

Proceeded to remove it, ream it, and install the new one. I chose not to use anti-seize as the one that came out didn't have any and came out very easily. Hopefully I don't regret that down the road.

Total time was right around half-hour, and fully a third of that was trying to determine if the MIL would go out just by starting the car a couple times. Seems it wasn't, so I cleared the code with my scanner and cleaned things up.