Engine Compression
Check compression with engine warm, all spark plugs removed and throttle wide open. Crank engine through at least 6 compression strokes per cylinder to determine engine compression.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| Coupe | 8.2:1 | ||
| 4000 | 8.2:1 | ||
| 5000 | 8.0:1 | ||
| 5000 Turbo | 7.0:1 | ||
| Compression Pressure | |||
| All Except Turbo | |||
| Normal (New Engine) | 131-174 psi (9-12 kg/cm2 ) | ||
| Minimum | 102 psi (7 kg/cm2 ) | ||
| Turbo | |||
| Normal (New Engine) | 100-131 psi (7-9 kg/cm2 ) | ||
| Minimum | 72 psi (5 kg/cm2 ) | ||
| Max. Variation Between Cylinders | |||
| All Except Turbo | 44 psi (3 kg/cm2 ) | ||
| Turbo | 28 psi (2 kg/cm2 ) | ||