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Home >> Audi >> 1982 >> 4000 S, Automatic Trans >> Repair and Diagnosis (Single Page) >> Engine Performance >> Specifications >> Tune-Up - 4 CYL >> Compression Pressure

Compression Pressure

Check compression with engine warm, all spark plugs removed and throttle wide open. Crank engine at least 6 strokes per cylinder to determine engine compression.

NOTE: Connect coil high tension wire to ground before cranking engine for compression test.
COMPRESSION SPECIFICATIONS

Compression Ratio 8.2:1
Compression Pressure
  Normal (New Engine) 131-174 psi (9-12 kg/cm2 )
  Minimum 102 psi (7 kg/cm2 )
Max. Variation Between Cylinders 44 psi (3 kg/cm2 )