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dmsfun 06-01-2010 11:41 AM

Hemi plug changing
I found a video on changing the WK plugs but it is for the 4.7; does anyone know if there is a video posted anywhere on changing plugs on the 06 Hemi with COP.'s ?

howiedodat 06-01-2010 02:07 PM

Re: Hemi plug changing
Hello, I have done my own in my 2005 Limited 5.7. Is there a question you need answered on the procedure ?

dmsfun 06-01-2010 02:32 PM

Re: Hemi plug changing
Thanks but The 05 is different than all other years as it is the only year WK that uses spark plug cables instead of Coil on plugs. Just looking for info on how to remove them, etc... have done dozens of traditional but not COPS

jeepster23 06-01-2010 02:46 PM

Re: Hemi plug changing
Go to look under spark plugs there is a entire write up for removal and installation of plugs for all engines.

Joe in PA 06-01-2010 03:28 PM

Re: Hemi plug changing
It couldn't be any easier really. You unplug the electrical connector, blow out any debris around the coil, remove the two bolts holding the coil in place, pull up on the coil to remove it, blow out any debris in the spark plug hole, use a plug socket and extension to remove the old plugs (two under each coil), gap the new plugs, install them carefully and torque to 13ft-lbs, place some di-electric grease in the coil pack boots, install the coil, install the coil bolts ad reconnect the electrical plug. Repeat 7 more times and you are done. :D

Just did the plugs on my 07' 5.7L this past weekend.

howiedodat 06-01-2010 07:18 PM

Re: Hemi plug changing
The only thing I would suggest is some anti-sieze on the plugs. Steel plug in an Aluminum head = bad things.

howiedodat 06-01-2010 07:19 PM

Re: Hemi plug changing
O, and lose the champions...IMO.

Joe in PA 06-01-2010 08:04 PM

Re: Hemi plug changing
I put anti-seize on all my spark plug threads as a force of habit. However it isn't called for in the service manual and can be a source of heated debate for some.

I also went with NGK plugs, which again will cause some folks a little consternation. IMHO just stay away from the fancy unobtainium plugs in the 5.7L and you will be fine.

howiedodat 06-01-2010 08:15 PM

Re: Hemi plug changing
I also use the NGK V Power. Good quality and good price.
IMO, of course.

jeepgcoman 06-01-2010 08:35 PM

Re: Hemi plug changing
Read the whole article:

Read the Installation Tips:

Personally, I never use anti-seize on NEW plugs, but if I remove and then reinstall USED plugs (almost never), I would use it.

Walt 06-01-2010 08:38 PM

Re: Hemi plug changing

Originally Posted by howiedodat (Post 215819)
The only thing I would suggest is some anti-sieze on the plugs. Aluminum plug in an iron head = bad things.

This thread reminded me that I had read something about this last year. Just some additional food for thought. Dry vs. wet torque is always a discussion on bolt torque values. The quote below comes from the linked site.

"Here are a couple of tips to help assure the success of changing spark plugs. The first is to remove spark plugs from aluminum cylinder heads only when the engine is cool. Since aluminum and steel expand and contract at different rates, removing spark plugs from an aluminum cylinder head while hot can actually cause thread and cylinder head damage. Before installing the spark plugs, make sure the threads are clean and in good condition. If in doubt, run a thread chaser through the plug opening in the cylinder head. Champion recommends that you do not use an anti-seize compound, since one has already been applied to the plugs at the factory. Next, install the spark plugs finger tight and, if using a taper seat spark plug, use a ratchet to rotate 1/16 of a turn. If using a gasket seat type spark plug, after installing finger tight, turn 1/4 to 5/8 of a turn. If this procedure is followed, spark plugs will not back out nor will they seize in the cylinder head."

Joe in PA 06-01-2010 09:14 PM

Re: Hemi plug changing

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