A8L V8-4.2L (BFM) (2004)
-
Unclip the hose - 2 -.
-
Remove the air intake tube - arrows -.
-
Disconnect the fuel injector electrical connectors - 2 -.
-
Remove the ignition coils.
-
Using the (3122B), remove the spark plugs.
-
Open the throttle valve completely.
-
Check the compression pressure using the (VAG 1763).
‹› Using the tester, refer to the operating instructions.
-
Operate the starter until the (VAG 1763) shows no further pressure increase.
Compression Pressure
Assembly is performed in the reverse order of removal, noting the following:
The following step must be performed after the engine compression test.
‹› Query the fault memory and erase, if necessary.
Use the (VAS 5051) to do so.
Tightening Specifications