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11A-12-8
6A1 ENGINE (E-W) -
Cylinder Head and Valves
VALVE SPRING
(1) Measure the valve spring’s free height. If the measurement
is less than specified, replace the spring.
1EN0264
Free
height
Out of square
Valve stem end
Valve stem
projection
Spring seating
surface
DEN0212
1EN0279
guide
Valve
Standard value
mm
Limit mm
SOHC 49.9 48.9
MIVEC 51.5 50.5
(2) Measure the squareness of the spring. If t he measurement
exceeds t he specified limit, replace the spring.
Standard value: 2
b
or less
Limit: 4
b
VALVE SEAT
(1) Assemble the valve, then measure the valve stem
projection between the end of the valve stem and the
spring seating surface. If the measurement exceeds t h e
specified limit, replace the valve seat.
Standard value Limit mm
mm
48.45SOHC 48.95
MIVEC 48.40 48.90
VALVE GUIDE
(1) Measure the clearance between the valve guide and valve
stem. If the limit is exceeded, replace the valve guide
or valve, or both.
Standard value:
Intake: 0.02 - 0.05 mm
Exhaust: 0.04 - 0.07 mm
Limit:
Intake: 0.10 mm
Exhaust: 0.15 mm
K
Mitsubishi Motors Corporation Feb. 1997 PWEE9622