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Home >> Volvo >> 1994 >> 850 Base, 4D Sedan, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Diagnostic Procedures >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Compression

Mechanical Inspection: Compression

Check engine mechanical condition using a compression gauge, vacuum gauge or 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 engine oiling system.
COMPRESSION SPECIFICATIONS

Application Specification
Compression Pressure (Minimum)
850
Non-Turbo 189-219 psi (13.2-15.3 kg/cm2 )
Turbo 156-185 psi (11-13 kg/cm2 )
940 128 psi (9 kg/cm2 )
960 184 psi (13 kg/cm2 )