You should inspect and replace the spark plugs on your Ford Taurus every 30,000 miles. In some cases, the spark plug wires can become worn out and you'll need to install new ones. Each spark plug and wire on the 2001 Taurus is connected to its own ignition coil and a cylinder in the engine. You need to install one spark plug and wire at a time to avoid mixing up the coils and cylinder holes that each one connects to.
Disconnect the car's negative battery cable at a time when the engine is cool.
Unscrew the individual ignition coil using a screwdriver and then remove the coil and set it aside.
Pull out the spark plug wire at the plug end, grasping it by the boot and twisting it out; a special tool for this is available. Disconnect the same wire at the ignition coil.
Clean out the spark plug's hole, using compressed air to blow out all dust, dirt and debris from inside.
Remove the spark plug from the engine using a socket wrench with a spark plug socket; turn the plug counterclockwise to remove it.
Apply a thin coat of anti-seize compound to the threads of the replacement spark plug. Make sure you get no compound on the plug's electrodes.
Thread the spark plug into its hole, making sure you don't cross-thread it, and then tighten it with the wrench and spark plug socket
Coat the insides of the spark plug boots with dielectric compound; use a small screwdriver to apply the compound.
Connect the smaller boot of the spark plug to the terminal on the ignition coil. Connect the larger boot to the spark plug, twisting and pushing it in place.
Install the ignition coil and screw it into place.
Repeat the above steps for each spark plug/wire that needs changing and installation.
Reconnect the negative battery cable once you've installed all necessary plus and wires.
