Check compression pressure with engine at normal operating temperature, all spark plugs removed and throttle valves wide open. Ensure battery is fully charged and starter is operating properly. Install remote starter in starter circuit. With ignition switch in the OFF position and using the remote starter, crank engine at least 5 engine revolutions per cylinder to determine engine compression. Compression readings are considered within specification if the lowest reading cylinder is within 75 percent of the highest reading.
| Application | Compression Ratio |
|---|---|
| 1.9L MA PFI & TBI | 9.0:1 |
| 2.2L PFI Non-Turbo | 8.5:1 |
| 2.2L PFI Turbo | 7.8:1 |
| 2.3L HSC PFI & HSC MA PFI (1) | 9.0:1 |
| 2.3L OHC PFI | 9.5:1 |
| 2.5L TBI | 9.0:1 |
| (1) MA engine is a High Output engine with Mass Airflow Meter. | |
| (1) | MA engine is a High Output engine with Mass Airflow Meter. |
COMPRESSION SPECIFICATIONS