Engine Compression
Deactivate fuel injection system by removing main relay prior to compression test. Fully charge battery. With engine at normal operating temperature, throttle fully open and engine at cranking speed.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Compression Ratio | ||
| 325 Ser & 528e | 9.0:1 | |
| 535i, 535is, 635CSi, L6, 735i & L7 | 8.0:1 | |
| Compression Pressure | 142-156 psi (10-11 kg/cm2 ) | |