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

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 249,000 (209,000–289,000)
Engines affected: 4.0L 6 Cylinder, 5.2L V8
6 model years affected: 1993, 1994, 1995, 1996, more1997, 1998
10 people reported this problem
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We are using about 1 qt of oil driving the car 200 miles.