A8L Quattro Sedan V8-4.2L (BVJ) (2007)
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Remove spark plugs using Spark Plug Removal Tool (3122 B).
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Check compression using Compression Tester (V.A.G 1763).
‹› Using tester. Refer to the Operating Instructions.
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Have a second technician press accelerator pedal completely and at the same time operate starter long enough until pressure increase no longer
appears on tester.
Assembly is performed in reverse order of removal, note the following:
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Install sparks plugs.
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Install Engine Control Module (ECM) (J623).
Faults are saved in ECM when electrical connectors are disconnected:
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Connect Vehicle Diagnosis, Testing & Info. System (VAS5051B).
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Start "Guided Functions" operating mode.
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Generate readiness code in ECM.
