What would cause sparkplugs to look like this?
Thread Starter
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Joined: Oct 2010
Posts: 1,756
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
Well i changed the plugs, since im basically doing a full tune up to help smooth out the idle. The plugs look pretty crappy, what is the cause of why they look like this? This is the worst out of all of them. I changed to bosch platinum+ the old ones were E3s and they were kinda a waste of money.
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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From: Western Michigan
Year: 1993
Model: Grand Cherokee
Engine: 4.0l inline 6
read this under ash fouledhttp://www.gnttype.org/techarea/engine/plugs.html
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Joined: Feb 2010
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From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
Looks like rust. You losing coolant? Rough idle? Lots of steam coming out of the exhaust even when the engine is at operating temp? Does the temp rise when you're on the gas and drops when you're off of the gas?
Last edited by Bustedback; Feb 14, 2011 at 04:18 PM.
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Aside from the e-3's looking like crap, take the bosch's back they are junk. I worked in auto parts for 4 years and saw more sets of Bosch platinum plugs come back than I can remember. Running platinums in a vehicle that wasn't sold with platinums has no benefit aside from making your wallet lighter. Get some champion coppers or NGK's.
Any kind of "gimmick" plug is a waste. Just like a throttle body spacer or a "tornado". E-3's, Bosch platinum 2's, 4's, split fire, etc....
And I agree you're getting water
In your cylinder for some reason.
Any kind of "gimmick" plug is a waste. Just like a throttle body spacer or a "tornado". E-3's, Bosch platinum 2's, 4's, split fire, etc....
And I agree you're getting water
In your cylinder for some reason.
Thread Starter
CF Veteran
Joined: Oct 2010
Posts: 1,756
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by Bustedback
Looks like rust. You losing coolant? Rough idle? Lots of steam coming out of the exhaust even when the engine is at operating temp? Does the temp rise when you're on the gas and drops when you're off of the gas?
Last edited by jeepxj19; Feb 14, 2011 at 07:33 PM.
Thread Starter
CF Veteran
Joined: Oct 2010
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
How old, how many miles? How was it running.
Thread Starter
CF Veteran
Joined: Oct 2010
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From: Salem Nh
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by djb383
Any idea on how many miles on the plugs? Their age?
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Joined: Feb 2011
Posts: 822
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From: orrville ohio
Year: 1994
Model: Cherokee
Engine: 4.0
Well i changed the plugs, since im basically doing a full tune up to help smooth out the idle. The plugs look pretty crappy, what is the cause of why they look like this? This is the worst out of all of them. I changed to bosch platinum+ the old ones were E3s and they were kinda a waste of money.
Last edited by tinytrax78; Feb 14, 2011 at 08:29 PM. Reason: spelling
CF Veteran
Joined: Nov 2009
Posts: 8,172
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From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO


