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-   -   3.6 Spark Plug access (http://www.wranglerforum.com/f274/3-6-spark-plug-access-263869.html)

Remmy18 08-19-2013 11:53 AM

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.

derf 08-19-2013 12:08 PM

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.

Scott2373 08-19-2013 12:13 PM

Quote:

Originally Posted by derf (Post 4096447)
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

Up Hill Bill 08-19-2013 12:21 PM

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.....

Remmy18 08-19-2013 12:25 PM

Quote:

Originally Posted by derf (Post 4096447)
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.

TeraFlex 08-19-2013 12:43 PM

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.

Remmy18 08-19-2013 04:10 PM

Quote:

Originally Posted by TeraFlex (Post 4096543)
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?

enjerhoo 08-19-2013 04:33 PM

How many miles on your Jeep? I'll hit 30K this week but am not planning on changing the plugs yet.

Remmy18 08-19-2013 04:42 PM

1 Attachment(s)
Quote:

Originally Posted by enjerhoo (Post 4097240)
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.



Attachment 287765

enjerhoo 08-19-2013 04:45 PM

ouch!

slowjeep 08-19-2013 04:48 PM

I see you're from Florida is that where it happend?

derf 08-19-2013 05:00 PM

Quote:

Originally Posted by Scott2373 (Post 4096460)
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.

enjerhoo 08-19-2013 05:07 PM

I hate to ask but how'd the passenger side hold up? Pics? :nonono:

Barrie 08-19-2013 05:07 PM

My 08 GT Mustang has them also,80,000 and still runs great, probably pull them in the next 5-10 thou.

TeraFlex 08-19-2013 05:08 PM

Remmy I'm not 100% sure as I've never tried but it seems like they should be right there.

Remmy18 08-19-2013 05:31 PM

Quote:

Originally Posted by slowjeep (Post 4097282)
I see you're from Florida is that where it happend?

Yep, I was up in Citrus County.

Remmy18 08-19-2013 05:32 PM

Quote:

Originally Posted by TeraFlex (Post 4097362)
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.

Remmy18 08-19-2013 05:34 PM

1 Attachment(s)
Quote:

Originally Posted by enjerhoo (Post 4097355)
I hate to ask but how'd the passenger side hold up? Pics? :nonono:

Amazingly well. Only damage was 2 small dings where the mirror folded in on the door and pillar.

Bottom right is after the flop.



Attachment 287805

panthermark 08-19-2013 05:43 PM

I swapped them in my Acura at around 85,000 miles.

-----------

Ouch on the painted flares!

Remmy18 08-19-2013 06:40 PM

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).

overblown 08-19-2013 06:59 PM

I change mine every 200 miles along with the oil. Change be too safe you know!

Remmy18 08-19-2013 07:12 PM

Quote:

Originally Posted by overblown (Post 4097740)
I change mine every 200 miles along with the oil. Change be too safe you know!

Awesome

BubbaEinstein 08-19-2013 10:08 PM

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).

m998dna 08-19-2013 11:34 PM

Quote:

Originally Posted by overblown (Post 4097740)
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...

.

TeraFlex 08-20-2013 09:45 AM

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.

NFRs2000NYC 08-20-2013 10:06 AM

Quote:

Originally Posted by Scott2373 (Post 4096460)
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.

overblown 08-20-2013 10:37 AM

Quote:

Originally Posted by m998dna (Post 4098873)
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? :rofl:

ztman 08-20-2013 10:51 AM

[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

Remmy18 08-22-2013 08:35 PM

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.

m998dna 08-22-2013 10:33 PM

Quote:

Originally Posted by overblown (Post 4100048)
Awful guess. Don't you know that all Harleys leak so much oil you never have to do an actual oil change? :rofl:

Never owned one... all my bikes ran pre-mix.

Different strokes for different folks.

;)

.


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