Compression Check: Testing and Inspection

Special Tools, Testers And Auxiliary Items
- VAG 1763 Compression tester
- 3122 B Spark plug wrench
- 3277 Installation tool

Test Conditions
- Engine oil temperature 30°C (86°F) minimum

Test Sequence
- Remove radiator grille



- Remove left and right mounting screws
- Hinge lock carrier forward (with radiator) -arrow-
- Disconnect heater element connector and remove intake hose between upper Air Cleaner and Throttle Valve Control Module J338 together with Positive Crankcase Ventilation valve
- Remove spark plug connectors using 3277 A tool and unclip ignition cables Repair Group 28
- Remove spark plugs using 3122 B spark plug wrench



- Disconnect 5-pin harness connector from ignition coil
-arrow-
- Fully open throttle valve
- Check compression using VAG 1763 compression tester

NOTE: See the manufacturers operating instructions for questions regarding compression tester specific usage.

- Operate starter until tester shows no further pressure increase

Compression Checking Specifications
- New: 10 to 13 bar
- Wear limit: 75 bar
- Permissible difference between all cylinders: 3 bar