Mechanical Inspection: Compression
WARNING: This page is about a different car, the 1995 Volkswagen Passat. 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 SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 10.0:1 |
| Compression Pressure | 157-186 psi (11.0-13.0 kg/cm2 ) |
| Minimum Compression Pressure | 106 psi (7.5 kg/cm2 ) |
| Maximum Variation Between Cylinders | 43 psi (3.0 kg/cm2 ) |