XJ ate sparkplug.
03-13-2013, 05:53 PM
#1
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XJ ate sparkplug.
I pulled this plug out of cylinder 6. So the XJ didn't really "eat" it, but there was a chunk missing. I don't know how bad this could really be. If it was a faulty plug, or something else happened.
03-13-2013, 07:34 PM
#3
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Year: 1997
Model: Cherokee
Engine: 4.0
is the engine mkaing any kind of ticking noise??? running rough??? if not i wouldnt worry about the little piece of ceramic that is missing. that piston may have a little scarring but more than likely not. how old is that plug??? may of just been a bad plug. ive seen a few do that.
03-13-2013, 08:16 PM
#4
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Year: 2000
Model: Cherokee
Engine: 4.0
And when was the last time you checked/changed the plugs? It never fails to amaze me when some folks drive the **** out of their XJs, change the plugs once every decade and then are surprised when they see something like this...
03-13-2013, 08:23 PM
#5
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Year: 1999
Model: Cherokee
Engine: 4.0
is the engine mkaing any kind of ticking noise??? running rough??? if not i wouldnt worry about the little piece of ceramic that is missing. that piston may have a little scarring but more than likely not. how old is that plug??? may of just been a bad plug. ive seen a few do that.
Start the engine up (for a second) with that plug removed and see if it blows that chunk out.
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03-13-2013, 09:20 PM
#8
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03-13-2013, 09:21 PM
#9
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is the engine mkaing any kind of ticking noise??? running rough??? if not i wouldnt worry about the little piece of ceramic that is missing. that piston may have a little scarring but more than likely not. how old is that plug??? may of just been a bad plug. ive seen a few do that.
Last edited by KJamesJR; 03-13-2013 at 09:27 PM.
03-13-2013, 09:22 PM
#10
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Year: 1990
Model: Cherokee
Engine: 4.0
That's an odd plug...porcelain shouldn't be that far off from the threads. Secondly that's detonation as someone said (using mobile app else id out your name in) and possibly also overheating. Are all your plugs that style? They really don't seem right
03-13-2013, 09:29 PM
#11
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They are all that style, Champion model RC12LYC. Have it right in my hand.
03-13-2013, 09:32 PM
#12
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03-13-2013, 10:03 PM
#13
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0
Put NGKs in it.
03-13-2013, 10:31 PM
#15
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Year: 1990
Model: Cherokee (XJ)
Engine: 4.0