Mechanical Inspection: Compression
WARNING: This page is about a different car, the 1997 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.
Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions. Compression pressure must be 363-450 psi (25.5-31.6 kg/cm2 ) and maximum variation between cylinders must not exceed 73 psi (5.1 kg/cm2 ).