Operation CHARM
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Audi
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2007
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A8 Quattro Sedan (4E2) V8-4.2L (BVJ)
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Engine
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Cylinder Head Assembly
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Valve
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Testing and Inspection
Valve: Testing and Inspection
Valves, Checking
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Check valves at stem and seating surface for traces of wear.
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If there are clear traces of wear, replace valve.