Mechanical Inspection: Compression

Engine mechanical condition can be checked with a compression gauge, vacuum gauge, or engine analyzer. See engine analyzer instruction manual for specific instructions.

CAUTION: DO NOT use ignition switch during compression tests on vehicles with fuel injection. Fuel injectors are triggered by ignition switch during cranking mode. Use a remote starter to crank engine to prevent fire hazard and contamination of catalytic converter and engine oiling system.

COMPRESSION SPECIFICATIONS

Application

Specification

Compression Ratio

9.7:1

Compression Pressure

⁽¹⁾

⁽¹⁾	Lowest cylinder compression reading should not be less than 75 percent of highest cylinder compression reading.