Engine Compression
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 | 10.5:1 | ||||
| Compression Pressure (Minimum) | |||||
| 850 (B5254S Engine) | |||||
| Motronic 4.3 | 170-199 psi (12-14 kg/cm2 ) | ||||
| Motronic 4.4 | 184-219 psi (13-15 kg/cm2 ) | ||||
| 850 R (B5254FT Engine) | (1) | ||||
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