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4G6 ENGINE (E-W) -
Cylinder Head and Valves
11A-9-7
VALVE
(1) Check the valve face for correct contact. If incorrect, reface
using a valve refacer. Valve seat contact should be
maintained uniform at the center of valve face.
(2) If the margin exceeds the service limit, replace the valve.
Item Standard value mm Limit mm
SOHC Intake 1.0 0.5
Exhaust 1.2 0.7
GDI Intake 1.0 0.5
Exhaust 1.5 1.0
(3) Measure valve’s total length. If measurement is less than
specified, replace the valve.
Item Standard value mm Limit mm
SOHC Intake 112.30 111.80
Exhaust 114.11 113.61
GDI Intake 105.5 105.0
Exhaust 105.7 105.2
VALVE SPRING
(1) Measure the free height of spring and, if it is smaller
than the limit, replace.
Item Standard value mm Limit mm
SOHC 51.0 50.0
GDI 48.3 47.3
(2) Measure the squareness of the spring and, if the limit
is exceeded, replace.
Item Standard value mm Limit mm
SOHC 2_ 4_
GDI 1.5_ 4_
AddedPWEE9616-A
E
Aug. 1998Mitsubishi Motors Corporation
1EN0264
Free
height
Out of
square