Rio Cinco L4-1.6L DOHC 16V (2003)
4. Measure diameter of each valve stem.
Diameter
Intake: 0.2152 - 0.2157 inch (5.465 - 5.480 mm)
Exhaust: 0.2138 - 0.2146 inch (5.430 - 5.450 mm)
5. Measure inside diameter of each valve guide at points shown in figure.
Diameter intake and exhaust valve guide: 0.2165 - 0.2171 inch (5.500 - 5.515 mm)
6. Calculate valve stem-to-valve guide clearance. Subtract outer diameter of valve stem from inside diameter of respective valve guide.
Clearance
Intake valve: 0.0008 - 0.0020 inch (0.020 - 0.050 mm)
Exhaust valve: 0.0020 - 0.0033 inch (0.050 - 0.085 mm)
Max: 0.008 inch (0.20 mm)
7. If clearance exceeds specification, replace valve, and/or valve guide.
8. Measure protrusion height of each valve guide. Replace valve guide as needed.
Intake: 0.5039 - 0.5276 inch (12.8 - 13.4 mm)
Exhaust: 0.5039 - 0.5276 inch (12.8 - 13.4 mm)
NOTE: Intake and exhaust valve guides are different. Be sure to use correct valve guide.
VALVE SEAT