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.
CAUTION:
On models with electronic ignition, connect coil high tension wire to ground before cranking engine.
COMPRESSION SPECIFICATIONS
| Application | Specification | ||
|---|---|---|---|
| Compression Ratio | |||
| Cabriolet, Golf & Jetta | 9.0:1 | ||
| Golf GTI & Jetta GLI | 10.0:1 | ||
| Quantum & Scirocco | 8.5:1 | ||
| Compression Pressure | |||
| Golf GTI & Jetta GLI | |||
| Maximum | 142-186 psi (10.0-13.0 kg/cm2 ) | ||
| Minimum | 107 psi (7.5 kg/cm2 ) | ||
| All Others | |||
| Maximum | 131-174 psi (9.0-12.0 kg/cm2 ) | ||
| Minimum | 102 psi (7.0 kg/cm2 ) | ||
| Max. Variation Between Cylinders | 44 psi (3.0 kg/cm2 ) | ||