This instructable is to show you how to make your own inexpensive tool to extract that broken boot off of the spark plug so you can continue with your tuneup.
For you DIYers that work on your own vehicle, there's nothing like replacing your spark plugs only to find out that the boot on the end of the wire has stuck to the spark plug and has detached itself from the wire/coil pack way down inside the spark plug tube. There is a commercial tool that costs around $30 but who carries that tool locally?
Using a 6' garden stake with a steel inner core purchased for about $3 at your local hardware store (Ace Hardware, Lowes, Home Depot), cut off about 12" from the blunt end with a hacksaw. The one I purchased was GardenPlus 6' garden stake, item# 0093249, model# 831138 from Lowes. You can make about 6 tools for the $3 investment.
Remove the inner core end plug from the blunt end of the cut stake and discard the plug.