Spark Plugs!!!!

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10-22-2011, 03:49 PM

2KXJJEEP

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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

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10-22-2011, 03:52 PM

99 Purple XJ

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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

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10-22-2011, 04:09 PM

gpXJ

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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.

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10-22-2011, 04:39 PM

highwater

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Year: 92

Model: Cherokee

Engine: 4.0

Autolite ,runs great

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10-22-2011, 05:27 PM

2KXJJEEP

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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

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10-22-2011, 08:16 PM

ivantheigor

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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.

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10-23-2011, 05:51 PM

00jeepXJ

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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.