Spark plug issues
#1
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Year: 2001
Model: Cherokee
Engine: 4.0 Straight Six
Spark plug issues
So I replaced my spark plugs about 6 months ago. I really only started driving it about a month ago. I put in Champion Platinum RC12PEC5. My dad says they are getting hot. Whatever that means. I do notice the electrode stick thingy is not burning straight. It goes off to the side a little. Do I have the wrong plugs? My dad things these plugs are to long
#3
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Year: 1996
Model: Cherokee
Engine: 4.0 HO Straight Six
Not sure what year your XJ is but I see that it's a newer model by your avatar.
Years 99-01 like NGK coppers
Anything earlier like Champion coppers
Switch out those plugs and see what happens
Years 99-01 like NGK coppers
Anything earlier like Champion coppers
Switch out those plugs and see what happens
#4
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Year: 2015, 2012
Model: Grand Cherokee (WK2)
Engine: 3.6L
I've had multiple problems with Champions over the years. Different cars.
I wouldn't put Champions in a lawn mower now.
I use NGK Platinum now in almost everything. Excellent results.
I wouldn't put Champions in a lawn mower now.
I use NGK Platinum now in almost everything. Excellent results.
#5
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Year: 2001
Model: Cherokee
Engine: 4.0 Straight Six
Thanks guys. We put NGK plugs in our boat that has twin 454's and we saw an increase in power. I'll look into new plugs. I've had a small amount of a rough idle and I wonder if the plugs have anything to do with it. And yes I checked the IAC so I know it's not that
#6
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Year: 1997, 1993
Model: Cherokee
Engine: 4.0L
As others have said. Your 2001 should have NGK copper plugs in it.
Skip the platinum, 3 prong, 4 prong, unobtanium fancy ***** plugs and give the engine what it's designed to use.
This is one of those situations where cheaper is actually better.
Skip the platinum, 3 prong, 4 prong, unobtanium fancy ***** plugs and give the engine what it's designed to use.
This is one of those situations where cheaper is actually better.
#7
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Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
The OE spec is RC12ECC, says it right uder the hood. They've been superceded by NGK ZFR5N though, which conveniently are cheaper. Guaranteed performance in a 4.0 with guaranteed compatibility. Most 4.0s don't do well with Platinum.
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#8
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I've got close to 30,000 on my Bosch Platinum 4's. Still getting the same mpg increase I got by choosing them. 16 and 21. Not saying any other plug wouldn't do the same but I can't see how they would do better. Been meaning to pull one to take a look. Probably will when I replace the leaking valve cover.
#9
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Year: 2001
Model: Cherokee
Engine: 4.0 Straight Six
Hey guys. I have a few more questions. How are the autolite plugs? Should I just stick with NGK for right now? And is this plug in the picture a copper plug? I can't fine anywhere where it says copper. Thanks guys
#11
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Year: 2001
Model: Cherokee
Engine: 4.0 Straight Six