New Beetle L5-2.5L (BPS) (2006)
Compression Check: Testing and Inspection
Compression, Checking
Special tools, testers and auxiliary items required
‹› Spark plug removal tool (3122B)
‹› Ignition coil puller (T40039)
‹› Torque wrench (5-50 Nm) (VAG 1331)
‹› Compression tester (VAG 1763)
‹› Adapter (VAG 1381/5A)
Conditions
‹› Engine oil temperature must be at least 30° C (86° F).
‹› Voltage supply OK.
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Remove the engine cover.
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Disconnect the connectors from the fuel injectors.
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Remove the ignition coils with power output stages. Refer to => [ Ignition Coils with Power Output Stages ] See: Powertrain Management/Ignition
System/Ignition Coil/Service and Repair.
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Remove the spark plugs using (3122B).
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Check the compression using (VAG 1763) and (VAG 1381/5A).
‹› Using the tester, refer to the operating instructions.
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Have a second technician operate the starter.
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Operate the starter until the tester shows no further pressure increase.
Compression Pressure
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To conclude work, erase the Diagnostic Trouble Code (DTC) memory of the Engine Control Module (ECM) since malfunctions were stored by
disconnecting the connectors. Refer to => [ Engine Control Module DTC Memory, Checking and Erasing ] See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.