Compression pressures, checking

WARNING: This page does not describe the selected car, but rather 15 other vehicles, including the 2006 Volkswagen GTI, 2005 Volkswagen Jetta, 2005 Volkswagen GTI, 2004 Volkswagen Jetta, and 2004 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Identifying Special Tools - Compression Pressures, Checking

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Special tools, testers and auxiliary items required

Spark plug removal tool 3122 B
Torque wrench V.A.G 1331
Compression tester V.A.G 1763

Fig 2: Identifying Main Fuse Panel

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Remove fuse 32

NOTE:

Removing fuse No. 32 interrupts the voltage supply to the injectors.

Test conditions:

Engine oil temperature must be at least 30 ° C.

Work procedure

Remove engine cover.
Disconnect ignition coil connectors.
Remove ignition coils.
Remove spark plugs using spark plug removal tool 3122 B.

Using a 2nd technician, have the accelerator pedal completely depressed.
Check compression pressure using compression tester V.A.G 1763.

NOTE:

Using tester Operating instructions.

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
10.0 to 14.0	7.0	max. 3.0

Screw in spark plugs using spark plug removal tool 3122 B and tighten to 30 Nm.

Vehicles with engine code AWD

Install ignition coils and tighten to 10 Nm.

Vehicles with engine code AWP, AWW

Install ignition coils. Ensure ignition coils are seated securely.

Continuation for all vehicles

Check DTC memory
Read readiness code
If DTC memory was cleared or engine control module disconnected from voltage supply, readiness code must be regenerated.