Mechanical Inspection: Compression
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 | Minimum psi (kg/cm2 ) @ RPM | Standard psi (kg/cm2 ) @ RPM |
|---|---|---|
| 2.0L | 119 (8.4) @ 300 | 171 (12.0) @ 300 |
| 2.5L | 142 (10.0) @ 250 | 203 (14.3) @ 250 |