Mechanical Inspection: Compression
Check engine mechanical condition using a compression gauge, vacuum gauge or engine analyzer. See engine analyzer instruction 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 engine oiling system.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||||
|---|---|---|---|---|---|
| Compression Ratio | |||||
| DOHC | 10.0:1 | ||||
| SOHC | 9.5:1 | ||||
| Compression Pressure | |||||
| DOHC | |||||
| Standard | 206 psi (14.5 kg/cm2 ) | ||||
| Limit | (1) 156 psi (10.9 kg/cm2 ) | ||||
| SOHC | |||||
| Standard | 199 psi (14.0 kg/cm2 ) | ||||
| Limit | (1) 156 psi (10.9 kg/cm2 ) | ||||
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