In the middle of each valve cover there are 3 coils. Those are the
ignition coils.
You unplug them and unbolt them and pull them out to get at the
spark plugs.
The rear ones are hard to get at.
You may have to remove the intake upper plenum to get at the rear
plugs.
The plugs last 100K miles so if you are not there yet, you do not
have to replace them.
When you do install new plugs,
Spark plug torque 18.0nm (130lb.ft
Spark plug gap 1.0-1.1mm (0.039- 0.043 inch).-----------------
Click this link below for detailed procedure:---
http://technoanswers.blogspot.com/2011/07/how-to-replace-spark-plugs-on-2005.html
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this should help.thanks.Helpmech.
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