LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Geo >> 1994 >> Prizm Base, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Basic Testing >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Compression
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Mechanical Inspection: Compression

Check engine mechanical condition using a compression gauge, vacuum gauge or engine analyzer. See engine analyzer manual for specific instructions. See COMPRESSION SPECIFICATIONS  .

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio 9.5:1
Normal Compression Pressure 191 psi (1316.9 kPa)
Minimum Compression Pressure 142 psi (979.1 kPa)
Maximum Variation Between Cylinders 14 psi (96.5 kPa)