Engine Compression
WARNING: This page is about a different car, the 1997 Volvo 960. However, it is still accessible from the selected car via links, so may be relevant.
Warm engine to normal operating temperature. Disconnect single wire from negative terminal of ignition coil(s). Check compression with all spark plugs removed, throttle valve wide open and at normal cranking speed (250-300 RPM).
CAUTION:
Failure to disconnect ignition coil(s) negative terminal may cause damage to ECU.
COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 10.7:1 |
| Compression Pressure (Minimum) | 170-199 psi (12-14 kg/cm2 ) |