Engine Compression
Check compression pressure with engine at normal operating temperature, throttle valve wide open, all spark plugs removed and coil wire disconnected. Minimum cranking speed is 300 RPM.
XJ6 COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Ratio | 9.6:1 |
| Compression Pressure | 160-170 psi (11.2-11.9 kg/cm2 ) |
| Maximum Variation Between Cylinders | 10 psi (.70 kg/cm2 ) |
XJS COMPRESSION SPECIFICATIONS
| Application | Specification |
|---|---|
| Compression Pressure | 225 psi (15.8 kg/cm2 ) |
| Maximum Variation | 35 psi (2.4 kg/cm2 ) |