Jeep Wrangler Forum - Reply to Topic
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum > Tune up soon

Join Wrangler Forum Today


Thread: Tune up soon Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

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.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
07-08-2013 10:34 PM
user4574 Okay, popped out the old ones today and replaced. NGK zfr5n were in, as spec on label along w Champion as choices. Don't know how old they are as they would be from previous owner and maintenance records were online at a dealership but don't say what was done when. Is that just a basic plug? I tried to look online but didn't find a lot about it as far as specs/materials to compare with the APP985 for performance.

They were worn. Gaps were worn to .65 in all cylinders except for #4 and #5 which were .55. Any idea what would cause the difference in gap wear? Anything I need to keep an eye out for?
07-08-2013 10:23 PM
user4574
Quote:
Originally Posted by user4574 View Post
Thanks Jerry. I wasn't sure how long the boots lasted or if they were recommended to replace after XXX miles, but noticed no one seemed to mention they were replacing them either.

Got my APP985 today. Bonus is Advance Auto has a $2 mail in rebate per plug now through 8/31/13.
ETA: actually sale through 7/31/13. Submission through 8/31/13 in case anyone else saw this sale and wanted to take advantage of it.
07-07-2013 10:29 PM
user4574 Thanks Jerry. I wasn't sure how long the boots lasted or if they were recommended to replace after XXX miles, but noticed no one seemed to mention they were replacing them either.

Got my APP985 today. Bonus is Advance Auto has a $2 mail in rebate per plug now through 8/31/13.
07-07-2013 03:08 PM
Jerry Bransford Ok those boots are part of the coil pack, I wouldn't worry about them at all. Know that 4.0L engines with the coil pack are pretty fussy about what spark plug technology they like to run well on. Avoid ANY single-tipped platinum plugs like the Autolite AP985 or Champion 3034.

Two good performing plugs for your particular that will last something like 100k miles include the Autolite APP985 and Champion 7034. Those are both double-tipped platinum (platinum on both sides of the gap) plugs. A very good iridium tipped plug that will likely perfom well for 200k miles is the Autolite XP985.
07-07-2013 03:02 PM
user4574 03 Sahara w 4.0 Coil pack w short boots.
07-07-2013 02:55 PM
Jerry Bransford What model year & engine do you have?
07-07-2013 12:36 PM
user4574
Tune up soon

Getting ready to do a tune up and have been watching the spark plug threads recently. Should the boots be replaced as well as the plugs or do they usually last okay? Any way to tell if they are good/bad or just replace as needed?

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


All times are GMT -5. The time now is 08:03 AM.



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