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.
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| Turbo Models | 7.8:1 | ||
| All Others | 8.5:1 | ||
| Compression Pressure | |||
| Turbo Models | |||
| Normal (New Engine) | 100-130 psi (7-9 kg/cm 2 ) | ||
| Minimum | 72 psi (5 kg/cm 2 ) | ||
| All Others | |||
| Normal (New Engine) | 130-174 psi (9-12 kg/cm 2 ) | ||
| Minimum | 100 psi (7 kg/cm 2 ) | ||
| Max. Variation Between Cylinders | |||
| Turbo Models | 44 psi (3 kg/cm 2 ) | ||
| All Others | 29 psi (2 kg/cm 2 ) | ||
COMPRESSION SPECIFICATIONS