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.
| CAUTION | On models with electronic ignition, connect coil high tension wire to ground before cranking engine. |
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| Cabriolet, Fox & Scirocco | 8.5:1 | ||
| Golf & Jetta | 9.0:1 | ||
| Golf GTI, Jetta GLI & Scirocco (1.8L 16-Valve) | 10.0:1 | ||
| Compression Pressure | |||
| Fox, Golf & Jetta | |||
| Maximum | 131-174 psi (9.0-12.0 kg/cm 2 ) | ||
| Minimum | 102 psi (7.0 kg/cm 2 ) | ||
| Golf GTI, Jetta GLI & Scirocco (1.8L 16-Valve) | |||
| Maximum | 145-189 psi (10.2-13.2 kg/cm 2 ) | ||
| Minimum | 109 psi (7.7 kg/cm 2 ) | ||
| Max. Variation Between Cylinders | 44 psi (3.0 kg/cm 2 ) | ||
COMPRESSION SPECIFICATIONS