LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mitsubishi >> 1991 >> Precis RS, Standard >> Repair and Diagnosis >> Engine Performance >> Engine Controls - Adjustments >> Engine Compression
October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Engine Compression

Ensure engine is at normal operating temperature, battery is fully charged and starter is operating properly. Remove all spark plugs and hold throttle valve wide open. Crank engine at least 6 revolutions per cylinder to determine engine compression. Engine cranking speed should be 250-400 RPM.

COMPRESSION SPECIFICATIONS

Application Specification
Compression Ratio
1.5L 9.4:1
2.4L 8.5:1
3.0L 8.9:1
Compression Pressure (1)
1.5L 192 psi (13.5 kg/cm2 )
2.4L 150 psi (10.5 kg/cm2 )
3.0L 150 psi (10.5 kg/cm2 )
(1) Maximum variation between cylinders is 14 psi (1.0 kg/cm2 ).
scientia non olet · About LEMON Manuals