Car Problem Reports

Jeep Grand Cherokee Increased Oil Consumption Due to Intake Manifold Plenum Gasket Leak

 
Jeep Grand Cherokee Problem
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Model Years Affected: 1993, 1994, 1995, 1996, 1997, 1998

Engines Affected: 4.0L 6 Cylinder, 5.2L V8

Average Mileage: 249,000 mi (209,000 mi - 289,000 mi)

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On 3.9L V6 and 5.9L V8 engines, the intake manifold gasket may leak and cause increased oil consumption and a spark knock during acceleration; the gasket should be replaced.

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