Compression Check: Testing and Inspection

Note the following information when checking cylinder compression.

TEST CONDITIONS
- Ensure engine temperature is at least 30°C (86°F) minimum.

TEST SEQUENCE
1. Disconnect five pin connector from ignition coil.
2. Remove spark plugs and connect compression tester tool No. VAG 1381 with adapter tool No. 1763, or equivalents.

NOTE: Follow any instructions supplied by the compression testers manufacturer.

3. With throttle held wide open, crank engine until tester shows no additional pressure increase.
4. Repeat procedure for each cylinder to be tested.
5. Compression pressure:

^ New: 10-13 bar (145-189 psi).
^ Wear limit: 7.5 bar (109 psi).

6. Permissible difference between cylinders: 3 bar (44 psi).