Compression Pressure, Checking

WARNING: This page is about a different car, the 2014 Volkswagen Beetle and 2013 Volkswagen Beetle. However, it is still accessible from the selected car via links, so may be relevant.

Special tools and workshop equipment required

Spark Plug Removal Tool 3122 B
Puller - Ignition Coil T40039
Torque Wrench 5-50 Nm V.A.G 1331
Compression Tester V.A.G 1763
Compression Tester Kit - Adapter 5A V.A.G 1381/5A

Test conditions:

Engine oil temperature must be at least 30°C (86°F).
Voltage supply OK.

-- Follow repair instructions. Refer to GENERAL INFORMATION .

-- Remove the air filter (engine cover). Refer to AIR FILTER HOUSING .

-- Pull connectors off all fuel injectors.

-- Remove the ignition coils with power output stage. Refer to IGNITION COILS WITH POWER OUTPUT STAGES .

-- Remove spark plugs using Spark Plug Removal Tool 3122 B.

-- Check compression using Compression Tester Kit V.A.G 1763 and Adapter V.A.G 1381/5A.

NOTE: Using tester operating instructions.

-- Have a second technician operate the starter.

-- Operate starter until tester shows no further pressure increase.

Compression Pressure:

New Bar Positive Pressure	Wear Limit Bar Positive Pressure	Difference Between Cylinders Bar Positive Pressure
9.0 to 13.0	8.0	max. 3.0

-- Erase the faults in the Engine Control Module (ECM) Diagnostic Trouble Code (DTC) memory that were stored when the connector was disconnected Vehicle Diagnostic Tester.