A6 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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Disconnect hose -1-.
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Disconnect hose -2-.
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Detach upper section of pressure pipe -3
Note: Plug lower section of pressure pipe.
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Pull crankcase breathers off cylinder head covers.
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Pull plug connectors off ignition coils.
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Remove ignition coils.
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Remove spark plugs.
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Unplug connectors from all 6 injectors.
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Remove fuse No. 28 (for fuel pump).
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Disconnect 5-pin connector at power output stage of ignition coils.
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Use compression tester V.A.G 1381 or V.A.G 1763.
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Open throttle fully.
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Operate starter until pressure reading on tester no longer rises.
Compression pressure values
Installing
Install in reverse sequence; note the following points.
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Fit fuse No. 28 (for fuel pump).
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Erase Diagnostic Trouble Code (DTC) memory.
Note: DTC'S will have been stored in the memory because the connector to the Hall sender has been unplugged. Therefore check and erase the
DTC memory after the test.