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Jeep Truck
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2004
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Grand Cherokee 4WD L6-4.0L VIN S
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Tune-up and Engine Performance Checks
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Fuel Pressure
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Testing and Inspection
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Fuel Pressure Leak Down Test
Fuel Pressure Leak Down Test
Test 1 - 2:
SYMPTOM
FUEL PRESSURE
LEAK DOWN
POSSIBLE CAUSES
-
Faulty fuel pump module
-
Fuel injector(s)