Question about 2005 Jeep Liberty
These are the most common causes for bad mileage.
Tire pressure is a huge factor (Tire should be set at the factory recommendation or 1-2 psi above, but never below - Tire should also be a Low Rolling Resistance Tire)
Oil level (you said it's OK, so I assume it's not above the full mark)
Running extra accessories (A/C, etc)
Dirty Air Filter
bad Ignition timing
engine running hotter than normal
fuel injectors may be stuck partially open
bad fuel pressure regulator
faulty emission control device (this usually triggers a check engine light)
Posted on Sep 08, 2009
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Check for carbon build up thats wat happen to me.
signs: low power, i reggular rev build up, smoking(not constant)
Posted on Feb 12, 2010
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Posted on Jan 02, 2017
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