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.
Average mileage: 108,416 (50,000–143,000)
Engines affected: 3.9L V6, 4.7L V8, 5.2L V8
21 people reported this problem
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Gasket between bottom plate of intake and plenum chamber failed. Engine ran well except for oil comsumption/quart@300 miles. Replaced gasket and problem solved. Sold truck at 203,000 mi with no further problems.
i have increase oil consumption and a knock during acceleration....///repair/shop told me i need a new motor///i drove turck from my job in duluth ga //back to atlanta area////