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Old 08-19-2013, 11:53 AM   #1
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3.6 Spark Plug access

Has anyone changed their spark plugs on the 3.6? They don't look like they're easy to access and I'm curious if this is something I could do myself or not. Any thoughts or advice would be greatly appreciated. Thx.

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Old 08-19-2013, 12:08 PM   #2
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I doubt anyone has put enough miles on theirs yet to need to change them. Aren't they good for like 100K miles?

But if you just want to swap them out, use a thin wall socket with a foam insert to hold on to the plug. Just be careful. The tubes surrounding the plug are thin and can break easily causing oil leaks.

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Old 08-19-2013, 12:13 PM   #3
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I doubt anyone has put enough miles on theirs yet to need to change them. Aren't they good for like 100K miles?
I've never heard of a 100k spark plug...? I usually change mine every 25-30K
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Old 08-19-2013, 12:21 PM   #4
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2012 Owners Manual calls for replacing spark plugs at 96,000 miles! I'll probably change them somewhere around 30,000 miles, but I'm just an old fool.....
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Old 08-19-2013, 12:25 PM   #5
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I doubt anyone has put enough miles on theirs yet to need to change them. Aren't they good for like 100K miles?

But if you just want to swap them out, use a thin wall socket with a foam insert to hold on to the plug. Just be careful. The tubes surrounding the plug are thin and can break easily causing oil leaks.
How does one access the spark plugs? Getting to them looks tricky as they're not accessible.
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Old 08-19-2013, 12:43 PM   #6
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They are indeed 100k (96k) sparkplugs, also commonly known as platinum plugs. With the cost of the plugs I highly recommend not replacing them at 30k miles. If you want to do them early wait till around 60k or 75k. As far as replacing try taking out the inner fender liner.
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Old 08-19-2013, 04:10 PM   #7
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They are indeed 100k (96k) sparkplugs, also commonly known as platinum plugs. With the cost of the plugs I highly recommend not replacing them at 30k miles. If you want to do them early wait till around 60k or 75k. As far as replacing try taking out the inner fender liner.
I will try removing the fender liner. Thanks! do you know if they are pretty visible from there?
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Old 08-19-2013, 04:33 PM   #8
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How many miles on your Jeep? I'll hit 30K this week but am not planning on changing the plugs yet.
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Old 08-19-2013, 04:42 PM   #9
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How many miles on your Jeep? I'll hit 30K this week but am not planning on changing the plugs yet.
16k. Flopped it and oil got in the top end and fouled the plugs (P0300 code) and sputter at idle. Don't want to take it to dealer and void my warranty completely.



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Old 08-19-2013, 04:45 PM   #10
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ouch!
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Old 08-19-2013, 04:48 PM   #11
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I see you're from Florida is that where it happend?
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Old 08-19-2013, 05:00 PM   #12
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I've never heard of a 100k spark plug...? I usually change mine every 25-30K
Most OEMs use high mileage spark plugs like that these days. They're iridium or something like that. My '04 GTO had them and I swapped 'em out at around 98K. They were still in great shape.
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Old 08-19-2013, 05:07 PM   #13
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I hate to ask but how'd the passenger side hold up? Pics?
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Old 08-19-2013, 05:07 PM   #14
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My 08 GT Mustang has them also,80,000 and still runs great, probably pull them in the next 5-10 thou.
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Old 08-19-2013, 05:08 PM   #15
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Remmy I'm not 100% sure as I've never tried but it seems like they should be right there.
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Old 08-19-2013, 05:31 PM   #16
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I see you're from Florida is that where it happend?
Yep, I was up in Citrus County.
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Old 08-19-2013, 05:32 PM   #17
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Remmy I'm not 100% sure as I've never tried but it seems like they should be right there.
Thanks! I certainly hope so.
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Old 08-19-2013, 05:34 PM   #18
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I hate to ask but how'd the passenger side hold up? Pics?
Amazingly well. Only damage was 2 small dings where the mirror folded in on the door and pillar.

Bottom right is after the flop.



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Old 08-19-2013, 05:43 PM   #19
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I swapped them in my Acura at around 85,000 miles.

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Old 08-19-2013, 06:40 PM   #20
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found out that the driver side plugs need to be accessed by removing the intake plenum. I'm getting a P0300 misfire code and sputter at idle only. Someone suggested to me that I should replace the passenger side plugs first (easy to access) since that was the side I was laying on and are likely to be the side that is fouled. I will try that first, disconnect the battery for a while to clear the code then fire it up with fingers crossed. If that doesnt fix it I will then try the driver's side (I will try going through the fender well first before removing the intake, Thanks Teraflex).
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Old 08-19-2013, 06:59 PM   #21
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I change mine every 200 miles along with the oil. Change be too safe you know!
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Old 08-19-2013, 07:12 PM   #22
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I change mine every 200 miles along with the oil. Change be too safe you know!
Awesome
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Old 08-19-2013, 10:08 PM   #23
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In addition to fender liner, lift the front of the jeep up by the frame so the axle drops or remove the tire (seems to be a common practice to get to plugs in newer cars).
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Old 08-19-2013, 11:34 PM   #24
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I change mine every 200 miles along with the oil. Change be too safe you know!
The question, which one? My bet is on your Harley...

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Old 08-20-2013, 09:45 AM   #25
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Let us know if it works, we will all have to do it at some point and I'd rather remove the liner than the intake, yikes. Sweet that the Jeep didnt take any real damage.
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Old 08-20-2013, 10:06 AM   #26
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I've never heard of a 100k spark plug...? I usually change mine every 25-30K
Almost every vehicle I have ever owned had a 100K spark plug life.
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Old 08-20-2013, 10:37 AM   #27
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The question, which one? My bet is on your Harley...

.
Awful guess. Don't you know that all Harleys leak so much oil you never have to do an actual oil change?
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Old 08-20-2013, 10:51 AM   #28
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[QUOTE=Remmy18;4097262]16k. Flopped it and oil got in the top end and fouled the plugs (P0300 code) and sputter at idle. Don't want to take it to dealer and void my warranty completely.


If you don't want to take it to the dealer, take it to an independent, they will have the right tools to do the job with out dissecting your jeep, and will probable less costly than doing it yourself
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Old 08-22-2013, 08:35 PM   #29
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I pulled the 3 easy access plugs on the passenger side (side down in flop), cleaned them off, reset the computer, and reinstalled. Cranked up, sounds good and no code. Lucked out on this one! Phew.. Thx all.
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Old 08-22-2013, 10:33 PM   #30
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Awful guess. Don't you know that all Harleys leak so much oil you never have to do an actual oil change?
Never owned one... all my bikes ran pre-mix.

Different strokes for different folks.



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