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Jeep Grand Cherokee

 

Report: Misfire due to carbon build up on exhaust valves

Jeep Grand Cherokee Problem
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Model Years Affected: 2001, 2002, 2003, 2004

Engine Affected: 4.0L 6 Cylinder

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Due to misfires, you may experience a loss of power when accelerating between 50 and 70 MPH (most noticeable below 32° F). Due to carbon buildup on the valve stems, the exhaust valves may close too late. All of the exhaust valves should be inspected and, if necessary, the engine should be decarbonized.

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