Cylinder Head And Valves: Inspection: Valve

If the valve face-to-seat contact is uneven or interrupted, correct the valve seat.
Measure the valve head margin. If the measured value exceeds the limit, replace with a new valve.
Standard value:

Intake 0.85 mm (0.033 inch)

Exhaust 1.50 mm (0.059 inch)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
Measure the valve overall length. If the measured value exceeds the limit, replace with a new valve.
Standard value:

Intake 87.21 mm (3.433 inches)

Exhaust 88.54 mm (3.486 inches)

Limit:

Intake 86.71 mm (3.414 inches)

Exhaust 88.04 mm (3.466 inches)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.