Mechanical Inspection: Compression
Engine mechanical condition can be checked using a compression gauge, vacuum gauge, or an engine analyzer capable of performing a relative compression test. See engine analyzer instruction manual for availability and description of relative compression feature.
CAUTION:
Use a remote starter to crank engine during compression test. DO NOT use ignition switch. The fuel injectors on many fuel injected models are triggered through ignition switch, which can cause flooding or crankcase contamination.