Magic Mileage For Spark Plug Replacement - JeepForum.com
View Poll Results: How often do you replace spark plugs? (in miles)
5,000 or less 0 0%
5,000- 10,000 0 0%
10,000 - 15,000 1 7.14%
15,000 - 20,000 1 7.14%
20,000 - 25,000 3 21.43%
25,000 - 35,000 8 57.14%
35,000 - 50,000 0 0%
50,001 or more 1 7.14%
Voters: 14. You may not vote on this poll

 
LinkBack Thread Tools
post #1 of 7 Old 04-02-2014, 08:33 AM Thread Starter
jp7794
Registered User
2006 KJ Liberty 
 
Join Date: Jul 2008
Location: MO
Posts: 385
Magic Mileage For Spark Plug Replacement

We all know that plugs in the KJ burn up quick and a new set can improve gas mileage considerably. That being said how often do you change your plugs?

jp7794 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 Old 04-02-2014, 12:28 PM
01CHEEKEE
Registered User
1995 ZJ 
 
Join Date: May 2009
Location: PENNSYLVANIA
Posts: 728
Teh cooler are so cheap, it just makes sense to change moar often...
01CHEEKEE is offline  
post #3 of 7 Old 04-02-2014, 07:35 PM
tjkj2002
Registered User
2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,369
Can't state a mileage but I change mine every October regardless of mileage,copper core Champions only.For $10 and 20mins of work why not.

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
tjkj2002 is offline  
post #4 of 7 Old 04-04-2014, 03:34 PM
DaveJKJ
Registered User
2005 KJ Liberty 
 
Join Date: Nov 2008
Location: stuck in the mud again
Posts: 1,091
Change approximately every 30,000 miles with the OEM spec NGK copper core plugs. No issues, easy to change, and not expensive.

War Veterans Jeep Group #31
Black Jeep Society #217
DaveJKJ is offline  
post #5 of 7 Old 04-07-2014, 09:50 PM
Clockworkorange
Registered User
2006 KJ Liberty 
 
Join Date: May 2007
Location: Hamilton Ontario Canada
Posts: 87
Original plugs with 86,000 miles (l39,000 KM)

Pulled em 3 times over the years and just cleaned them in the sand blaster. That little hand held jobby for spark plugs that you attach to an air hose.
Set the gap to spec. .o40". I want to see if I can get 100,000 miles out of the original plugs. I know that they are cheap to replace but why throw out something that I can adjust to perfect spec. They are showing wear now though so I will probably just get one more clean & gap out of them.
Now if the fuel mileage was suffering I would replace them but my mileage has been stable in the 6 years that I have owned it.
Clockworkorange is offline  
post #6 of 7 Old 04-08-2014, 08:32 AM
tommudd
Registered User
2004 KJ Liberty 
 
Join Date: Aug 2008
Location: Central OH/ Kilimanjaro,Tanzania
Posts: 5,566
Would never run them that long, even cleaning etc. mines every 25,000 on the average since new , now at 197,000

04 KJ 4.5 JBA lift, 03 KJ 2.5 JBA coilovers,
tommudd is offline  
post #7 of 7 Old 04-08-2014, 10:30 AM
DaveJKJ
Registered User
2005 KJ Liberty 
 
Join Date: Nov 2008
Location: stuck in the mud again
Posts: 1,091
Quote:
Originally Posted by Clockworkorange View Post
Pulled em 3 times over the years and just cleaned them in the sand blaster. That little hand held jobby for spark plugs that you attach to an air hose.
Set the gap to spec. .o40". I want to see if I can get 100,000 miles out of the original plugs. I know that they are cheap to replace but why throw out something that I can adjust to perfect spec. They are showing wear now though so I will probably just get one more clean & gap out of them.
Now if the fuel mileage was suffering I would replace them but my mileage has been stable in the 6 years that I have owned it.
I used to do that sometimes years ago but haven't done it in many years. I would only clean and re-gap them one time though. I finally figured it was not worth it and just get new ones. The copper-core NGK's are not expensive anyway.

War Veterans Jeep Group #31
Black Jeep Society #217
DaveJKJ is offline  
Reply

Tags
mileage , spark plugs

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

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.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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 On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome