Compression Check: Testing and Inspection

Compression Pressure, Checking

NOTE:
Engine oil temperature minimum 3O° C (86° F)
Throttle valve open fully (accelerator pedal in full throttle position)

- remove all spark plugs

- disconnect coil wire at ignition distributor and connect to ground with clamp





- check compression with tool US 1120

- operate starter until tester no longer indicates a rise in pressure

Compression Pressure Values