Mechanical Inspection: Compression
Check engine mechanical condition using a compression gauge, vacuum gauge or 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 engine oiling system.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| 1.5L | |||
| Excel | 9.4:1 | ||
| Scoupe | |||
| Non-Turbo | 10.0:1 | ||
| Turbo | 7.5:1 | ||
| 1.6L | 9.2:1 | ||
| 1.8L | 9.2:1 | ||
| 2.0L | 9.0:1 | ||
| 3.0L | 8.9:1 | ||
| Compression Pressure | |||
| 1.5L | |||
| Excel | 192 psi (13.5 kg/cm2 ) | ||
| Scoupe | |||
| Non-Turbo | 192 psi (13.5 kg/cm2 ) | ||
| Turbo | 149 psi (10.5 kg/cm2 ) | ||
| 1.6L | 171 psi (12.0 kg/cm2 ) | ||
| 1.8L | 171 psi (12.0 kg/cm2 ) | ||
| 2.0L | 171 psi (12.0 kg/cm2 ) | ||
| 3.0L | 173 psi (12.2 kg/cm2 ) | ||
| Maximum Variation Between Cylinders All Models | 14 psi (1.0 kg/cm2 ) | ||