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Home >> Audi >> 2013 >> S8 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 4.0L - Cylinder Head & VALVETRAIN - Engine Code(S): CEUA, CGTA, CTFA & CTGA >> 15 Cylinder Head, VALVETRAIN >> Intake And Exhaust Valves >> Valves, Checking

Valves, Checking

-- Check valves at stem and seating surface for traces of wear.

-- If there are clear traces of wear, replace valve.