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Running lean.. Help?

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Old 12-22-2014, 05:28 PM
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Default Running lean.. Help?

Alright this is on my boyfriend's Jeep. It's a 1995 XJ. It's running lean if you look at the spark plugs.. White tips.. We just bought a cold air intake for it and his concern is now that there is much more air flow it will run even more lean. We think it could be dirty fuel injectors? Not really sure, but we would greatly appreciate opinions!

Thank you everyone
Old 12-22-2014, 06:36 PM
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Originally Posted by 1998blackXJ
Alright this is on my boyfriend's Jeep. It's a 1995 XJ. It's running lean if you look at the spark plugs.. White tips.. We just bought a cold air intake for it and his concern is now that there is much more air flow it will run even more lean. We think it could be dirty fuel injectors? Not really sure, but we would greatly appreciate opinions!

Thank you everyone
Nah. The fuel injection system regulates the air/fuel mixture.
Attached Thumbnails Running lean.. Help?-spark-20plug-20reading.jpg  
Old 12-22-2014, 07:33 PM
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Originally Posted by cruiser54
Nah. The fuel injection system regulates the air/fuel mixture.
so just don't worry about it?
Old 12-22-2014, 10:01 PM
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Originally Posted by 1998blackXJ
so just don't worry about it?
I wouldn't. How did the plugs compare to the ones on the chart?

Getting any Check Engine light?
Old 12-22-2014, 10:11 PM
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Originally Posted by cruiser54
I wouldn't. How did the plugs compare to the ones on the chart? Getting any Check Engine light?
just have white tips.. And no check engine light
Old 12-22-2014, 10:14 PM
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Originally Posted by 1998blackXJ
just have white tips.. And no check engine light
Correct brand and application?
Old 12-22-2014, 10:42 PM
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Originally Posted by cruiser54
Correct brand and application?
I just got the champions like everyone recommend
Old 12-23-2014, 06:38 AM
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I wouldn't lose any sleep over it.
Old 12-23-2014, 06:50 AM
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Originally Posted by cruiser54
I wouldn't lose any sleep over it.
X2... Cruiser you can prove or disprove this but I swear I heard cherokees were built to run in a slightly lean biased condition from the factory? Or was that late model with the epa emissions junk?
Old 12-23-2014, 07:19 AM
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14.7 to 1.

Any plug in good shape, meaning not in there since Moby Dick was a minnow, will be rather white.

At 30,000 miles, when the plugs, wires, cap and rotor are due for replacement, that's how they look.
Old 12-23-2014, 09:31 AM
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Originally Posted by cruiser54
14.7 to 1. Any plug in good shape, meaning not in there since Moby Dick was a minnow, will be rather white. At 30,000 miles, when the plugs, wires, cap and rotor are due for replacement, that's how they look.
thanks cruiser!
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