Mechanical Inspection: Compression
WARNING: This page is about a different car, the 1993 Volkswagen Passat, 1993 Volkswagen Fox, 1993 Volkswagen EuroVan, 1993 Volkswagen Corrado, and 1993 Volkswagen Cabriolet. However, it is still accessible from the selected car via links, so may be relevant.
Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions.
WARNING:
DO NOT use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
COMPRESSION SPECIFICATION
| Application | psi (kg/cm(2 ) | Compression Ratio |
|---|---|---|
| Cabriolet | 131-174 (9.2-12.2) | 10.0:1 |
| Corrado SLC | 157-186 (11.0-13.0) | 10.0:1 |
| EuroVan | 128-170 (9.0-12.0) | 8.5:1 |
| Fox | 128-170 (9.0-12.0) | 9.0:1 |
| Passat GL (2.0L) | 142-186 (10.0-13.0) | 10.8:1 |
| Passat GLX (2.8L) | 142-186 (10.0-13.0) | 10.0:1 |