Remove the four bolts holding the coil pack to the passenger side cylinder head.
Lift coil rail off of engine.
Using the appropriate sized spark plug tool, unscrew the spark plugs 1 at a time from the engine and replace with correctly gapped plugs.
spark plug loacation on 2006 jeep wrangler sport 4.0 liter engine
In the engine.
Hopefully this will helphttp://www.4x4xplor.com/sparkplug.html
when do you change spark plugs
remove the bolts holding the coil pack to the engine.(the long black plastic thing on the side of the engine about 1.5" x 2" x the length of the motor) This will expose the spark plugs.
Six
To change the spark plugs in a 1997 astro van do I have to change the spark plugs from the bottom of the engine/
All spark plug gaps are adjustable.
How to change the spark plugs
how to change spark plugs on a 2001 expedition
A swivel spark plug socket will let you get to #1.
A Jeep Wrangler has one spark plug per cylinder.