Spark Plug Replacement - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > WF Local > WF Local Forums for Your Region and State > California Jeep Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-11-2013, 10:45 AM   #1
Jeeper
 
Join Date: Oct 2011
Posts: 73
Spark Plug Replacement

My 2008 Wrangler X (3.8L V8) seems a bit sluggish - local mechanic says plugs should be replaced at 40k - I now have 45k - but Jeep maintenance guide says 102k.

Question - should I replace now and if so are there any recommendations of type, e.g. a better type of plug or just Pep Boy specials??

Thanks
KLW24

KLW24 is offline   Quote Quick Reply
Old 06-11-2013, 11:44 AM   #2
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,200
Images: 2
I'd go for either Autolite's iridium-tipped XP5426 which will perform well close to 200k miles or their 100k mile platinum-tipped APP5426. Champion and NGK makes good plugs for your engine too but I don't yet have their part numbers memorized.

__________________
When you have a choice, buy American.

Jerry Bransford is online now   Quote Quick Reply
Old 06-11-2013, 11:54 PM   #3
Jeeper
 
Join Date: Oct 2011
Posts: 73
thanks Jerry will look into those!
KLW24 is offline   Quote Quick Reply
Old 06-12-2013, 11:02 PM   #4
Sponsoring Vendor
 
JPi1's Avatar
 
Join Date: Nov 2011
Location: So Cal
Posts: 4,585
Ngk is my fav hands down.
__________________
32215 Dunlap Blvd.
Yucaipa, CA
92399
877-795-JEEP
Www.jeeperformanceinc.com
www.facebook.com/Jeeperformanceinc
JPi1 is offline   Quote Quick Reply
Old 06-17-2013, 12:26 AM   #5
Jeeper
 
Join Date: Oct 2011
Posts: 73
Thanks JPi - do you recommend I change them at 45k - and will they give me more horsepower?

Also been thinking about converting to cold air intake...thoughts?

Kurt
KLW24 is offline   Quote Quick Reply
Old 06-17-2013, 07:51 AM   #6
Sponsoring Vendor
 
JPi1's Avatar
 
Join Date: Nov 2011
Location: So Cal
Posts: 4,585
Quote:
Originally Posted by KLW24 View Post
Thanks JPi - do you recommend I change them at 45k - and will they give me more horsepower?

Also been thinking about converting to cold air intake...thoughts?

Kurt
The factory plugs are a platinum tip plug, which will last far longer than 45k. While changing mine out at 40k smoothed out the idle and upped the mileage slightly, It won't give you more power. And my opinion on cold air intakes are right there with programmers that add HP to your jeep, waste of $$. Gearing is the best thing you can do after larger tires to up the power.
__________________
32215 Dunlap Blvd.
Yucaipa, CA
92399
877-795-JEEP
Www.jeeperformanceinc.com
www.facebook.com/Jeeperformanceinc
JPi1 is offline   Quote Quick Reply
Old 06-17-2013, 11:27 PM   #7
Jeeper
 
Join Date: Oct 2011
Posts: 73
Thanks JPi - great advice - will give you a call this week to discuss further!
KLW24 is offline   Quote Quick Reply
Old 06-18-2013, 12:25 PM   #8
Jeeper
 
highwayman's Avatar
 
Join Date: Dec 2010
Location: Yucaipa
Posts: 653
Quote:
Originally Posted by JPi1 View Post
Ngk is my fav hands down.
Stan nailed it. Only one I run in my vehicles.

High mileage on todays spark plugs themselves isn't an issue. I wouldn't leave any set of plugs in more than 50k. The problems you have is when the damn things seize up in the heads from too many heat cycles or clown hands install.

Don't forget some antiseize for the plugs and dielectric grease for the boots to finish the install, bud.
highwayman is offline   Quote Quick Reply
Old 06-20-2013, 02:06 PM   #9
Jeeper
 
Join Date: Oct 2011
Posts: 73
10-4!

KLW24 is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 12:44 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC