Spark Plugs!!!!

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Oct 22, 2011 | 03:49 PM

2KXJJEEP

Thread Starter

CF Veteran

Joined: Jun 2011

Posts: 1,492

Likes: 0

From: KY

Year: 2000

Model: Cherokee

Engine: 4.0 L6

Spark Plugs!!!!

What is the best plugs to run in a 4.0 L6... has of now im running bosch +2's with neon injectors... please give ur input

Oct 22, 2011 | 03:52 PM

99 Purple XJ

CF Veteran

Joined: Oct 2010

Posts: 1,889

Likes: 2

From: Long Island N.Y.

Year: 1999

Model: Cherokee

Engine: I6 4.0

If its a 2000 then a platinum core but for distributor ignition i always run cooper core plugs

Oct 22, 2011 | 04:09 PM

gpXJ

CF Veteran

Joined: Sep 2009

Posts: 1,142

Likes: 2

From: Grand Prairie, Texas

Year: 1998

Model: Cherokee

Engine: 4.0 HO I6

Auto lite, Champion or NGK copper plug. Bout $2 and it will run better than anything else.

Oct 22, 2011 | 04:39 PM

highwater

CF Veteran

Joined: Feb 2011

Posts: 1,707

Likes: 0

From: southern indiana

Year: 92

Model: Cherokee

Engine: 4.0

Autolite ,runs great

Oct 22, 2011 | 05:27 PM

2KXJJEEP

Thread Starter

CF Veteran

Joined: Jun 2011

Posts: 1,492

Likes: 0

From: KY

Year: 2000

Model: Cherokee

Engine: 4.0 L6

sorry not tryin to be a d**k but i will never run autolites in nothing but i have been told that champion's a great in a mopar and iv only ran NGK in my dirtbikes and fourwheelers so they should be pretty good in my jeep

Oct 22, 2011 | 08:16 PM

ivantheigor

CF Veteran

Joined: Jan 2011

Posts: 1,375

Likes: 3

From: Maine

Year: 2000

Model: Cherokee

Engine: 4.0L I6

I run Bosch platinums... work good. Ive had no problems.
Work a whole lot better than my ast set. And you dont have to gap them.

Oct 23, 2011 | 05:51 PM

00jeepXJ

CF Veteran

Joined: Apr 2009

Posts: 1,601

Likes: 1

From: Kalamazoo, MI

Year: 2000

Model: Cherokee

Engine: 4.0L with throttle body spacer and cold air intake, bored throttle body, #784 injector upgrade

factory on my 2000 was champion copper.... they still were working wonderful till last month when I figured it was time to replace them with 100k on the clock.