A4 Sedan L4-1.8L Turbo (AWM) (2001)
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Disconnect connectors -3-.
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Remove ignition coils -1-.
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Remove spark plugs with spark plug spanner 3122B.
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Disconnect connectors from all injectors.
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Fully open throttle valve.
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Check compression with compression tester VAG 1381N.A.G 1763.
Note: Using the compression tester
Refer to, Operating instructions
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Operate starter until tester shows no further pressure increase.
Compression pressure values:
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Install spark plugs and ignition coils.
Note: Replace gaskets for ignition coils if damaged.
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Check Diagnostic Trouble Code (DTC) memory:
Note: DTC's will have been recorded in the DTC memory because the connectors have been unplugged. Check and, if necessary, erase the DTC
memory after completing the test.