A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Disconnect electrical connections - 1 - at ignition coils - 2 -.
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Remove ignition coils from spark plugs using Ignition Coil Puller (W8 & W12 Eng.) (T10166).
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Using spark plug removal tool (3122 B), remove spark plugs.
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Check compression using compression tester (V.A.G 1763).
‹› Using tester => 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.
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Install spark plugs and ignition coils.
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Install intake manifold side parts => [ Left Intake Manifold Side-Section ] See: Intake Manifold/Service and Repair/Left Intake Manifold
Side-Section and => [ Right Intake Manifold Side-Section ] See: Intake Manifold/Service and Repair/Right Intake Manifold Side-Section.
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As a final step, check DTC memory of Engine Control Module (ECM) and erase it, since malfunctions were stored by removing the fuse and
disconnecting the electrical harness connectors.
