Mechanical Inspection: Compression

Check engine mechanical condition with 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. 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.

ENGINE COMPRESSION SPECIFICATIONS

Application

Specification

3.5L

⁽¹⁾ 155-170 psi (10.9-12.0 kg/cm² )

⁽¹⁾	Maximum difference between each cylinder should not exceed 25 percent.