Mechanical Inspection: Compression
Ensure battery is fully charged. Turn ignition off. Disconnect ignition coils. Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed, and throttle wide open. See COMPRESSION SPECIFICATIONS table.
COMPRESSION SPECIFICATIONS
| Application |
Specification - psi (kPa) @ RPM |
| Optima & Magentis (Canadian) |
| 2.4L |
178 (1227) @ 250-400 |
| 2.7L |
170 (1200) |
| Rio |
184 (1275) @ 300 |
| Sedona |
170 (1200) |
| Spectra |
193 (1331) @ 300 |
| Sportage |
163 (1124) @ 270 |