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#1 Old 12-22-2007, 09:11 AM
quiller303
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Hemi spark plug change

Hey guys,

I would like to change the plugs in my 2004 Ram w/ Hemi after the dealer quoted me a $250 price. I've change plugs in many other vehicles, but am not sure if there are any access issues or things unique to this engine. I would also appreciate any recommendations on the plugs themselves with an eye towards performance. Thanks.
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#2 Old 12-22-2007, 09:21 AM
Newbeme
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Here's a how to article that's on this site. http://www.dodgetalk.com/forums/showthread.php?t=93658
I haven't changed the plugs on my Ram yet, but it doesn't sound too complicated, just time consuming.

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#3 Old 12-22-2007, 10:32 AM
dale3fan3
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There are a couple plugs tough to get at in the back but take your time and you will be fine. We were able to torque all mine to the proper spec without any issues as well.
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#4 Old 12-22-2007, 10:58 AM
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if your a small thin person it helps but if you have fat fingers it will be a worse. expect some knuckle rash since gloves get in the way.

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#5 Old 12-22-2007, 01:05 PM
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pull fener well

HI
I changed plugs a couple of months ago and read on this forum to:
Jack up the left front of the truck and put a jack stand under for safety.
Remove the left front wheel
Remove the inner fender well = 10 minute job. there are a couple of wires clipped onto it.
After removal fasten wires elseware.
lean in and change the plugs they are now easy to get at and no more broken back problems cuz you are sitting down.
Don't forget that the air cleaner box on the right side lifts out of the way and makes the job on the right side easier.
When putting in the new plugs don't let them fall down as it can close the gap! I use a short length of rubber tubing pushed onto the plug to lower it and start threading.
Good luck and hope this helps.
don't forget the never seize and special grease.
Ron

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#6 Old 12-22-2007, 02:35 PM
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Hemi spark plug wires

Thanks for all the info! My next concern are the plug wires. I've seen some advertised with 0 resistance and claiming a performance boost. As they are pricey, I am a little skeptical. I've got about 33,000 miles on my truck. I am wondering what's out there and what works.
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#7 Old 12-22-2007, 02:41 PM
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Bosch Yttrium +2. They work great, and add a mild bit of performance. Also do not require gapping. Mine idled very smooth with the upgrade. I just changed them. Have fun!
http://www.dodgetalk.com/forums/showthread.php?t=185356

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#8 Old 12-22-2007, 06:12 PM
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I love my MSD plug wires. They are bigger than stock though so they won't fit in the OEM plug wire tracks. I took the track out and organized the wires with cable ties. If you just set the wires on top of the OEM track then you won't be able to get the hemi hat back on. Great wires though, noticeable difference in idle and off the line acceleration. Watch out for the racing wires, they will interfere with your radio reception.
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#9 Old 12-22-2007, 09:43 PM
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I just changed mine today at the 59K mileage mark. It took me about 3 hours to do the job and that included pulling drivers front tire and wheel liner (the best way to get the back 4 plugs). I checked the gap of the NGK plugs I pulled out that I put in at 25K and it was at .055. That's .010 increase in gap. Hoping my gas mileage improves some. I ended up going back to the stock Champion copper plug. From what I've seen and a lot of the comments from others, there is no significant advantage in anything but the stock plug.

I still need to change the plug wires. I'm thinking about getting 8mm Taylor.

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#10 Old 12-23-2007, 12:25 AM
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Correct me if Im wrong but besides having half as many plugs the 4.7 is much easier isn't it?

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#11 Old 12-23-2007, 05:53 AM
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Quote:
Originally Posted by Hemi2500
I just changed mine today at the 59K mileage mark. It took me about 3 hours to do the job and that included pulling drivers front tire and wheel liner (the best way to get the back 4 plugs). I checked the gap of the NGK plugs I pulled out that I put in at 25K and it was at .055. That's .010 increase in gap. Hoping my gas mileage improves some. I ended up going back to the stock Champion copper plug. From what I've seen and a lot of the comments from others, there is no significant advantage in anything but the stock plug.

I still need to change the plug wires. I'm thinking about getting 8mm Taylor.
Get shorties and dont look back. the 8.2 mm will be jusyt fine the heavier 10.??? is stiff and guys had them pop off alot. You can order them from henson motorsports from Art and I thin Bob at Moes sells them too.
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