Rio L4-1.6L (2004)
Valve: Service and Repair
REPLACEMENT
VALVE SEAT RING
1. Cut away the inner face of the valve seat to reduce the wall thickness.
2. Enlarge the cylinder head hole so that matches the specified cylinder head hole inner diameter of new valve seat ring.
3. Heat the cylinder head to about 250°C (480°F) and press-fit an oversize seat ring for the cylinder head hole size.
4. Using lapping compound, lap the valve to the new seat.
Valve seat contact width 0.0382 - 0.0618 inch (0.97 - 1.57 mm)
VALVE SEAT RING OVERSIZE
VALVE GUIDE
1. Using the special tool (09221-FD100(A)), withdraw the old valve guide toward the bottom of cylinder head.
2. Recondition the cylinder head hole so that it can match the newly press-fitted oversize valve guide.