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Jeep Truck
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1991
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Wrangler L6-242 4.0L VIN S MFI
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Technical Service Bulletins
Engine: Technical Service Bulletins
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Engine - Knocking When Cold
Fuel Pump and Filter - Replacement Information
Engine - Piston Knock At Idle
Recycled Coolant - Precautions
Engine Rear Main Oil Seal - Service
Air Inlet - Improved Water Fording Capability
Engine - Head Gasket Leaks/Seepage