Spark Plug question - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 06-03-2014, 06:18 PM   #1
Jeeper
 
Join Date: Jan 2014
Posts: 24
Talking Spark Plug question

So I've spoken with two mechanics. One on the Mopar payroll, and one who isn't. Both said not to mes with aftermarket plugs and wires, just stick with mopar. Can anyone verify this data as the best advice?

__________________
Joe n Jules Merenda

2010 Wrangler Unlimited Mountain
Bone stock save the K&N but I cant wait to trick it
1998 Cherokee Sport
JMerenda is offline   Quote Quick Reply
Old 06-03-2014, 07:26 PM   #2
Thank you Veterans

5-Year WF Supporting Member
::WF Moderator::
 
Beastmaster's Avatar
 
Join Date: Aug 2011
Location: The Old Pubelo
Posts: 24,817
Sounds hoakey to me.

Chrysler doesn’t make their own spark plugs, in fact I think they are made by Champion. Most of the time mechanics like to keep with parts they get from the dealer because a) warranty and fitment can be assured and b) they don’t want to take the time and/or be responsible for researching an alternative that may be as good or even better (or cheaper).
IMO, there is no reason to buy parts from the dealer if they can be purchased somewhere else. There are always parts that will work that are sometimes cheaper, sometimes better and sometimes both, you just have to do your homework.

Beastmaster is offline   Quote Quick Reply
Old 06-03-2014, 07:55 PM   #3
Jeeper
 
Join Date: Mar 2014
Location: Tonopah AZ
Posts: 325
You don't say year and engine type but here is my $.02 worth.
the standard plugs be they OEM or brand x will perform just fine in a stock engine so long as the heat range is compatible and will last about 50k before they start to degrade.
Platinum or iridium tip will last much longer and might improve performance slightly.
I would stay away from so called performance plug [3G] and plugs with multiple ground electrodes the are just hype in my experience and not worth the extra money.
bubbabud is offline   Quote Quick Reply
Old 06-03-2014, 10:28 PM   #4
Jeeper
 
Join Date: Jan 2014
Posts: 24
Thanks guys. Bubba, its the 3.6 in my 2010. I put NGK platinum in my '98 Cherokee Sport (4.0) and they seem fine. Was also thinking Bosch Platinum as well. Any thoughts on these?
__________________
Joe n Jules Merenda

2010 Wrangler Unlimited Mountain
Bone stock save the K&N but I cant wait to trick it
1998 Cherokee Sport
JMerenda is offline   Quote Quick Reply
Old 06-03-2014, 10:54 PM   #5
Jeeper
 
Tweak's Avatar
 
Join Date: Jan 2013
Location: Keller, TX
Posts: 2,662
Quote:
Originally Posted by JMerenda View Post
Thanks guys. Bubba, its the 3.6 in my 2010. I put NGK platinum in my '98 Cherokee Sport (4.0) and they seem fine. Was also thinking Bosch Platinum as well. Any thoughts on these?
you mean 3.8?

the general consensus has been OEM is the way to go for spark plugs and air filter

really anything engine related I stick with OEM
Tweak is offline   Quote Quick Reply
Old 06-03-2014, 11:30 PM   #6
Jeeper
 
Join Date: Mar 2014
Location: Tonopah AZ
Posts: 325
I have had good luck both NGK and Bosch platinum and a real nightmare with G3 when the electrode broke off and was digested by the engine fortunately it chewed it up and spit it out with no damage to the engine could have been worse.
bubbabud is offline   Quote Quick Reply
Old 06-04-2014, 10:07 AM   #7
Jeeper
 
Join Date: Aug 2013
Location: Calgary, Alberta Canada
Posts: 290
Some vehicles can be fussy about aftermarket parts. Some aftermarket parts are not made within the tolerances required for said vehicle. My truck as an example does not like anything but OEM plugs or it runs like crap. I am not too sure about the Jeep yet. I always go with tried and true products to save hassles down the road. Unless several people here can tell you that brand X plug works well in your 3.8 then I would use Mopar plugs etc. as you know those work already.
__________________
2013 Jeep Wrangler Sahara (White)
grizzstang is offline   Quote Quick Reply
Old 06-07-2014, 11:54 AM   #8
Jeeper
 
Join Date: Jan 2014
Posts: 24
Anyone have an opinion on the wires. I was looking at Denso as they are cheaper than what the dealer offers and I was told to stay away from Autolite
__________________
Joe n Jules Merenda

2010 Wrangler Unlimited Mountain
Bone stock save the K&N but I cant wait to trick it
1998 Cherokee Sport
JMerenda is offline   Quote Quick Reply
Old 06-07-2014, 04:44 PM   #9
Jeeper
 
blackwidow05's Avatar
 
Join Date: Sep 2013
Location: McKinney
Posts: 114
Stick with the 7440 Champion double platinum’s on your 3.8L its oem and actually a good price if you buy them at AutoZone not to mention offer the best performance you are going to get and be safe doing it. I ran the Autolite Iridium’s in mine for a while and it didn't throw codes it also wasn't running as good as it did with the OEM Champions either. In fact just last week I replaced the Autolites with the factory Champion 7440'S from AutoZone. I only had 25k on the Autolites but, the gap was way out. I had some plugs that were as much as .070 not really impressed for a 8 dollar a piece plug. It was less than 25 bucks with tax for the OEM Champions. Wire wise I use the Dura last ones from AutoZone. Most will tell there is nothing to gain with fancy wires are plugs when it comes to the Jeep 4.0L or 3.8L very easy going engines. 3.6L might be a different story can't comment on it. They are less than 30 bucks and have a lifetime warranty so you never have to buy wires again. A few things to remember. Check the gap on the plugs this is probably the most important because I found my new ones to be off a little bit. Gap is .050. also Champion coats all there plugs with a type of anti seize already so do not put any because you will over tighten them being the plugs don't have a washer on them. 12ft is the torque for the plugs I didn't do mine like that just hand tightend and turned just a smudge. It’s not a hard job but, plan on it taking a few hours to do it right. Left side is very easy and will make you think it’s a cake walk but, the right side can be a bugger with both wires and plugs. Be careful with the plug wire holders they will break if you yank on them or move them to much especially with age and heat they get under there. Wear long sleeves if you can because I can guarantee some cut arms.
__________________
Soccer mom six in the mix.
blackwidow05 is offline   Quote Quick Reply
Old 06-10-2014, 01:41 PM   #10
Jeeper
 
Join Date: Jan 2014
Posts: 24
Thanks for the tips widow. Awesome information
__________________
Joe n Jules Merenda

2010 Wrangler Unlimited Mountain
Bone stock save the K&N but I cant wait to trick it
1998 Cherokee Sport
JMerenda is offline   Quote Quick Reply
Old 06-10-2014, 02:07 PM   #11
Jeeper
 
Freedom JK's Avatar
 
Join Date: Oct 2013
Location: Baton Rouge, LA
Posts: 846
Quote:
Originally Posted by JMerenda View Post
Thanks guys. Bubba, its the 3.6 in my 2010. I put NGK platinum in my '98 Cherokee Sport (4.0) and they seem fine. Was also thinking Bosch Platinum as well. Any thoughts on these?
I have used Bosch Platinum in the past in another vehicle and I did not like them. The car I had them in ran great at first then I would notice the idle would get a little rough after a year or so. I have been using the NGK plugs for several years now and they work great.

Freedom JK 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:
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




Download our Mobile App

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:16 AM.



Jeepģ, 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