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Unread 02-26-2011, 08:56 PM   #1
geoffh
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05 WK 5.7 spark plugs

how difficult is it to change 05 WK 5.7 spark plugs? I have the recommended copper 570 champion spark plugs... im an aircraft mechanic but im usually reluctant to do work on my own stuff. I got a an estimate from a place in town and they quoted me at $300 just for the spark plug maintenance. Ridiculous!

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Unread 02-26-2011, 09:25 PM   #2
Walt
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Quote:
Originally Posted by geoffh View Post
how difficult is it to change 05 WK 5.7 spark plugs? I have the recommended copper 570 champion spark plugs... im an aircraft mechanic but im usually reluctant to do work on my own stuff. I got a an estimate from a place in town and they quoted me at $300 just for the spark plug maintenance. Ridiculous!
Not difficult. Need 1/4" drive metric socket set and 3/8" drive metric socket set, including 5/8" spark plug socket. Torque wrench for 10-15 ft-lb on plugs and gap tool for 0.043". Buy a tube of dielectric grease for plug boots.

Sears has these: Stock nos. 009-44596 and 009-42274 in the tool catalog. Just used them. The K-D plug socket set worked exceptionally well.

Will take you ~1.5 hrs first time. Go slow and do 1 cylinder at a time.
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Unread 02-26-2011, 09:34 PM   #3
geoffh
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awesome thanks for all the info. got the grease already and it turns out my room mate has all the tools you listed.
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Unread 02-26-2011, 09:38 PM   #4
maxst2
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Get a swivel attachment for the back passenger and driver plugs... you'll spend most your time on those. lol

Its that much since they are prolly charging you to replace both banks of plugs. you have 16 plugs. 8 Iridiums and 8 coppers.
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Unread 02-26-2011, 09:41 PM   #5
Walt
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Originally Posted by maxst2 View Post
......Its that much since they are prolly charging you to replace both banks of plugs. you have 16 plugs. 8 Iridiums and 8 coppers.
Not for the HEMI. 16 coppercore plugs only. 4.7L engines are different.

My first spark plug change at the dealer was $165, including 16 MOPAR copper core plugs. Now I have the tools, so it's only $32 in spark plugs every 30K miles.
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Unread 02-26-2011, 09:45 PM   #6
maxst2
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ah yeah...
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Unread 02-27-2011, 11:07 AM   #7
airportdave
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One other tip- make sure your spark plug socket is firmly attached to the extension. If you don't use a locking extension, you run the risk of leaving the socket firmly attached to the plug when you try to pull the socket out after installing a plug. It's a b**ch to fish it out...Ask me how I know!
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Unread 02-27-2011, 11:28 AM   #8
maxst2
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Done the 4.7L Gen I this morning... that sucked. It was cold out
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Unread 02-27-2011, 04:10 PM   #9
Walt
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Quote:
Originally Posted by airportdave View Post
One other tip- make sure your spark plug socket is firmly attached to the extension. If you don't use a locking extension, you run the risk of leaving the socket firmly attached to the plug when you try to pull the socket out after installing a plug. It's a b**ch to fish it out...Ask me how I know!
That's the beauty of the K-D spark plug socket set. It's 3 sockets with different length extensions attached to a 5/8" spark plug socket, on a wobble connection. Each socket has a rubber insert and a magnet. Doesn't leave anything behind to fish out.

I did some searching to find it. Glad I did. Only place I found it was the Sears Tool catalog -or- Sears on-line. They do go on sale. Since the 5.7L HEMI's need 16 spark plugs every 30K miles, it was worth it for me. The bonus was I got another new tool!
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'08 WK GC Limited. 5.7L HEMI. Quadra-Trac II. Bright Silver Metallic. Class IV hitch.
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Unread 02-28-2011, 08:25 AM   #10
airportdave
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Thanks for the tip Walt- I'll have to check that out!
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Unread 02-28-2011, 08:29 PM   #11
CruiserClass
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Quote:
Originally Posted by Walt View Post
Not difficult. Need 1/4" drive metric socket set and 3/8" drive metric socket set, including 5/8" spark plug socket. Torque wrench for 10-15 ft-lb on plugs and gap tool for 0.043". Buy a tube of dielectric grease for plug boots.

Sears has these: Stock nos. 009-44596 and 009-42274 in the tool catalog. Just used them. The K-D plug socket set worked exceptionally well.

Will take you ~1.5 hrs first time. Go slow and do 1 cylinder at a time.
A stubby 10mm wrench will also come in handy for some of the harder to get to coil bolts.

An assortment of extentions ranging from 3" to 12" and a pair of wobbles and you can get anywhere you need to go to change the plugs.
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Unread 06-17-2011, 12:26 PM   #12
modette
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Bought my 2005 5.7L used...guess if they use copper plugs I better check them out, I bet they were not ever serviced and the vehicle has now 103K miles on it. Seems to run fine, so maybe the dealer changed them out before selling the vehicle (one can hope). Never really did this on my other vehicles...tend to change them out for Platinum 4's and never look back.

Guess next time near a dealer I'll go in and get me 16 plugs. Oh and thanks for the Sears spark plug tool...I'm going to look at that now.
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Unread 06-18-2011, 06:13 PM   #13
WH-HEMI
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Quote:
Originally Posted by modette View Post
tend to change them out for Platinum 4's and never look back.
Don't use Platinum or Double Platinum plugs. HEMI's don't like them. You either go standard Copper or Iridium plugs.

I have 8 Iridium (compression stroke) and 8 copper (on exhaust stroke). Works like a charm.
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Unread 06-29-2011, 05:50 PM   #14
wkearney99
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The KD kit with the magnetic sockets is THE thing to have for changing plugs in the Hemi. You'll use all three of them as the clearance varies on the plug sockets. It's WELL worth the money. The biggest hassle with changing the plugs is getting the plastic bracket off the coil. There's a bracket that sits on top of two of the cylinders (one each side) that carries the wiring over the coil. Figuring out how to get it loose without wrecking it is a trick. And then there's the issue of finding inevitably dropped 10mm bolt. Mine turned up in the driveway two days later. Meanwhile I stole one of the bolts near the right headlamp to hold one of the coils in place.
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Unread 06-30-2011, 04:23 PM   #15
Walt
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Quote:
Originally Posted by wkearney99 View Post
....The biggest hassle with changing the plugs is getting the plastic bracket off the coil. There's a bracket that sits on top of two of the cylinders (one each side) that carries the wiring over the coil. Figuring out how to get it loose without wrecking it is a trick. And then there's the issue of finding inevitably dropped 10mm bolt. ....
For others who haven't done it:
1. The plastic wire harness routing covers just pry off (carefully) as they clip on the outboard and inboard sides of the coils.
2. The 10mm capscrews will stay captive if you only unscrew them until they clear the female thread.

Glad you liked the K-D socket tools. One of those "elegantly-simple" designs.
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'08 WK GC Limited. 5.7L HEMI. Quadra-Trac II. Bright Silver Metallic. Class IV hitch.
Michelin LTX M/S tires. Fumoto oil drain valve. Billet Technology oil catch can.
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