Engine Compression

NOTE: Engine compression specification for the Defender 90 is not available from manufacturer.

Check engine compression with engine at normal operating temperature at specified cranking speed, all spark plugs removed and throttle wide open.

ENGINE COMPRESSION SPECIFICATIONS (DISCOVERY)

Application

Specification

Normal Compression Pressure ⁽¹⁾

8.31:1

150-160 psi (10-11 kg/cm² )

9.35:1

170-180 psi (12-13 kg/cm² )

⁽¹⁾	Compression ration is stamped on a cast pad, above serial number, on the cylinder block between cylinders No. 3 and No. 5.