LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1992 >> Eclipse Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Compression
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Mechanical Inspection: Compression

Check engine mechanical condition with a compression gauge, vacuum gauge, or an engine analyzer. See engine analyzer manual for specific instructions.

WARNING: DO NOT  use ignition switch during compression tests on fuel injected vehicles. Use a remote starter to crank engine. Fuel injectors on many models are triggered by ignition switch during cranking mode, which can create a fire hazard or contaminate the engine's oiling system.
COMPRESSION SPECIFICATIONS

Application (1) psi (kg/cm2 )
Compression Pressure
1.8L (VIN T) 185 (13.0)
2.0L (VIN R)
Eclipse 192 (13.4)
Galant 220 (15.4)
2.0L (VIN U) 164 (11.5)
2.0L (VIN V) 178 (12.5)
Maximum Variation Between Cylinders 14 psi (1.0 kg/cm2 )
(1) See ENGINE/VIN ID article for VIN information.