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.
Check engine compression with engine at normal operating temperature, all spark plugs removed and throttle wide open.
COMPRESSION SPECIFICATIONS
| Application (1) | Specification | |||
|---|---|---|---|---|
| Compression Ratio | ||||
| 2.0L (VIN F) | 8.5:1 | |||
| 2.0L (VIN Y) | 9.6:1 | |||
| Compression Pressure | ||||
| 2.0L (VIN F) | 178 psi (12.5 kg/cm2 ) | |||
| 2.0L (VIN Y) | 170-225 psi (11.7-15.5 kg/cm2 ) | |||
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