Engine Compression
WARNING: This page does not describe the selected car, but rather 34 other vehicles, including the 2001 BMW Z8, 2001 BMW Z3, 2001 BMW X5, 2001 BMW M5, and 2001 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.
Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open. The DME master relay and/or fuel pump relay MUST be pulled out for compression test. See BASIC DIAGNOSTIC PROCEDURES article for additional information.
COMPRESSION SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Normal Compression Pressure | ||
| 6-Cylinder | 142-156 psi (10-11 kg/cm2 ) | |
| V8 | 170-199 psi (12-14 kg/cm2 ) | |
| V12 | 142-170 psi (10-12 kg/cm2 ) | |