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Home >> Volkswagen >> 2021 >> Golf Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Cylinder Head, VALVETRAIN (4-Cylinder Direct Injection (1.8L; 2.0L, 4V, Turbocharger, Chain Drive, Ea888, Generation III))) >> 15 Cylinder Head, VALVETRAIN >> Cylinder Head >> Compression Pressure, Checking

Compression Pressure, Checking

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Special tools and workshop equipment required 

Test Sequence

NOTE:

Engine oil temperature: minimum 30 °C (86 °F)

Battery voltage at least 12.7 V

-- Remove the engine cover. Refer to ENGINE COVER, REMOVING AND INSTALLING .

-- Disconnect the ignition coil sensors connectors and remove them from the ignition coils at the same time.

-- Remove the ignition coil bolts and remove the ignition coils.

-- Disconnect the connectors:

Fig 1: Identifying Connectors For Fuel Injectors
GWWA15-11487Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
  1. For Fuel Injector -N30- to -N33-
  2. For Cylinder 1 Fuel Injector 2 -N532- to Cylinder 4 Fuel Injector 2 -N535-

-- Remove spark plugs with : 3122B  .

-- Check the compression pressure using the : VAG1763  , : VAG1381/1  and : VAG1381/5A  .

Fig 2: Identifying Compression Tester And Adapter
GWWN15-10811Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
NOTE:

For information on using the tester. Refer to the Operating Instructions.

-- Operate the starter until the tester no longer indicates that the pressure is increasing.

Compression Pressure Pressure
New 11.0 to 14.0 bar (159.54 to 203.05 psi)
Wear limit 7.0 bar (101.52 psi)
Maximum difference between cylinders 3.0 bar (43.5 psi)

-- Install the spark plugs. Refer to SPARK PLUGS, REPLACING .

-- Install the ignition coils. Refer to IGNITION COILS WITH POWER OUTPUT STAGES, REMOVING AND INSTALLING .

NOTE:

By separating the connections, Diagnostic Trouble Code (DTCs) are stored to memory. After the test, check and erase the DTC memory.

-- Turn on the ignition and select the following menu items on the Vehicle Diagnostic Tester:

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