best spark plugs

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Sep 21, 2010 | 11:39 AM

#46

captainofiron

CF Veteran

Joined: Apr 2009

Posts: 1,109

Likes: 3

From: Austin, Texas

Year: 1991

Engine: 4.0 I-6 H.O.

Quote:

Originally Posted by lurk520

Just got my jeep out of the shop and learned some bad news about Bosch Platinum... The side that screws down into the motor busted apart so a piece of porcelain and platinum is lost some where in my motor (no harm done so far).... The mechanic said these spark plugs have a stupid design, what happens is the electrode wears down till it's beneath the porcelain, then what happens is it's sparking beneath the porcelain and that causes it to break apart into the motor.... I'm changing mine asap......

yes it is a terrible design

Sep 21, 2010 | 11:57 AM

#47

rich

Registered Users

Joined: Sep 2009

Posts: 1,371

Likes: 4

From: morrisonville ny

Year: 2000 @ 1994 givin away

Model: Cherokee

Engine: 4.0

Buy what you want too.

Sep 21, 2010 | 01:49 PM

#48

JerseyJeeper

CF Veteran

Joined: Jul 2009

Posts: 2,245

Likes: 1

From: New Jersey (Milltown, Lavallette, and Wayne)

Year: 1999

Model: Cherokee

Engine: 4.0L I6

This is one of those questions people can argue forever like which letter of the alphabet is the best lol Pick what you like and what you think will work for you

Sep 23, 2010 | 12:30 PM

#49

captainofiron

CF Veteran

Joined: Apr 2009

Posts: 1,109

Likes: 3

From: Austin, Texas

Year: 1991

Engine: 4.0 I-6 H.O.

Quote:

Originally Posted by JerseyJeeper

This is one of those questions people can argue forever like which letter of the alphabet is the best lol Pick what you like and what you think will work for you

Sep 23, 2010 | 12:59 PM

#50

cherokeeaddiction23

CF Veteran

Joined: Sep 2009

Posts: 1,092

Likes: 0

From: Chesapeake, Virginia

Year: 2002

Model: Grand Cherokee

Engine: 4.7

new argument, X is better cause its the first letter in XJ

Sep 23, 2010 | 01:51 PM

#51

Dogberri

Junior Member

Joined: Dec 2009

Posts: 81

Likes: 0

Model: Cherokee

Quote:

Originally Posted by warpig602

Should be able to find them locally....I thought everybody had these??????

couldn't get them locally so i back ordered them through the guy on the Hubble telescope and after just one week of driving all my rust is gone!!! (i wish)

Sep 23, 2010 | 02:38 PM

#52

JerseyJeeper

CF Veteran

Joined: Jul 2009

Posts: 2,245

Likes: 1

From: New Jersey (Milltown, Lavallette, and Wayne)

Year: 1999

Model: Cherokee

Engine: 4.0L I6

Quote:

Originally Posted by captainofiron

Quote:

Originally Posted by cherokeeaddiction23

new argument, X is better cause its the first letter in XJ

Hahaha oh boy didn't realize I was going to start this lol

Sep 23, 2010 | 03:19 PM

#53

Metmknice

CF Veteran

Joined: Oct 2008

Posts: 2,127

Likes: 2

From: Hell, CA

Year: 1989

Model: Cherokee

Engine: 4.0L I6

Quote:

Originally Posted by 9XJSPORT7

I have the Accel Kit with an accel coil. Been running them for almost two years with no problems. I have been thinking of switching the plugs to the E3's as I have herd very good thing about them.

x2 on the Accel Super Tune kit. The wires alone cost around what the kit costs and they are nice. Comes with plugs, wires, cap and rotor. Good deal
There probably are better plugs than what come with them, but they work well.

Quote:

Originally Posted by warpig602

I also use NGK in everything I own.

I have heard on 97+ NGK's are best and champions or non-platinum for older XJ's

Nov 29, 2014 | 02:54 PM

#54

Tntt321

Newbie

Joined: Nov 2014

Posts: 1

Likes: 0

Model: Cherokee

Quote:

Originally Posted by warpig602

Yep, Im also involved heavily in the shooting community and the "better throttle response" statement you see whenever someone does an upgrade and gets no improvement, is the the same as the "if I do my part" that shooters use when claiming their rifle is MOA at 1000 yards.

Small delay in the reply:
What kind of 1,000 yard Shooting do you do?

May 4, 2016 | 09:23 AM

#55

forcefed44

Newbie

Joined: Mar 2015

Posts: 18

Likes: 1

From: north NJ or Easter shore VA

Year: 95

Model: Cherokee

X3 with the Accel kit.. Just make sure you properly gap the plus and not rely on what they set them at the factory.. My Jeep ran rich over time and found out that the plugs were completely out of gap spec..

May 5, 2016 | 11:42 AM

#56

Guntar13

Senior Member

Joined: Jan 2012

Posts: 635

Likes: 2

From: Indiana

Year: 1999

Model: Cherokee

Engine: 4.0

Plain Jane champion copper plugs is my vote

Apr 22, 2020 | 09:07 AM

#57

Topsparkplugs

Newbie

Joined: Apr 2020

Posts: 1

Likes: 0

From: USA

Model: Cherokee (XJ)

I am using the NGK ZFR5N spark plug for my 4.0. I also recommended this spark plug for your vehicle because it comes with lower emission features and good fuel economy.

Apr 22, 2020 | 10:44 AM

#58

RockyMtn96XJ

CF Veteran

Joined: Aug 2019

Posts: 1,467

Likes: 267

From: Littleton, CO

Year: '96

Model: Cherokee (XJ)

Engine: 4.0 HO

Fake

Apr 22, 2020 | 01:33 PM

#59

TheBoogieman

Seasoned Member

Joined: Nov 2018

Posts: 284

Likes: 52

From: CharlottesHELL VA

Year: 1999

Model: Cherokee (XJ)

Engine: 4.0

Fake news.

Apr 22, 2020 | 04:19 PM

#60

RockyMtn96XJ

CF Veteran

Joined: Aug 2019

Posts: 1,467

Likes: 267

From: Littleton, CO

Year: '96

Model: Cherokee (XJ)

Engine: 4.0 HO

Quote:

Originally Posted by Topsparkplugs

I am using the NGK ZFR5N spark plug for my 4.0. I also recommended this spark plug for your vehicle because it comes with lower emission features and good fuel economy.

What the heck is this........ seems like a troll or something else fake. The website looks like it was typed up by a 3 year old with English as a second language...