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Unread 07-03-2014, 11:28 PM   #1
jfive
dos heeps
 
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2011 JK Wrangler 
 
Join Date: Jun 2011
Location: Denvah, CO
Posts: 257
JK Hemi Plug Change

I wanted to pass along a few things I discovered while changing the plugs in my 5.7 VVT Rubicon Unlimited. What should have been a 2-3 hour job went way over. It started with my choice of spark plug tools. The Mac with dual universal joints slipped right in the first plug hole. When I went to remove the plug it wedged into the plug tube. The top was barely sticking out of the top of the head. A few hours later of gentle persuation and finally a little force after getting some images online of what I was up against and it was out. You can see where the rivet on both sides was digging in. Be careful what tool you choose.

worsttool.jpg  
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John
'11 JKU
'88 YJ
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Unread 07-03-2014, 11:30 PM   #2
jfive
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2011 JK Wrangler 
 
Join Date: Jun 2011
Location: Denvah, CO
Posts: 257
I had to pull the TIPM to get to the stuck tool and the dual batteries to get to the passenger back cylinders to get access to the plugs and pull the coils.
tipm-pulled.jpg  
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John
'11 JKU
'88 YJ
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Unread 07-03-2014, 11:32 PM   #3
jfive
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2011 JK Wrangler 
 
Join Date: Jun 2011
Location: Denvah, CO
Posts: 257
I found it easiest to pull all the coil packs at once to give myself a little more room. Here you can see my new spark plug tool sticking out of the head. The tool extension below worked great.
pullingplug.jpg   besttool.jpg  
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John
'11 JKU
'88 YJ
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Unread 07-03-2014, 11:34 PM   #4
jfive
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2011 JK Wrangler 
 
Join Date: Jun 2011
Location: Denvah, CO
Posts: 257
After 57k miles the plugs looked pretty good. I put some copper anti seize on the new double platinum APP5325 Autolites and put all 16 of them back in.
57kmileplug.jpg   newplugs.jpg  
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Cheers,
John
'11 JKU
'88 YJ
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Unread 07-03-2014, 11:36 PM   #5
jfive
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2011 JK Wrangler 
 
Join Date: Jun 2011
Location: Denvah, CO
Posts: 257
All buttoned up. Here is the pick of the passenger side of the hemi before I started. Not a lot of room in the engine bay there.
gettingstarted.jpg  
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John
'11 JKU
'88 YJ
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