Inspection Using Special Tools

CAUTION:
- Before using the Valve Inspection Tool, make sure that the air pressure gauge on the air compressor indicates over 400 kPa 14 kgf.cm, 57 psi).
- Inspect the valve clearance before rocker arm inspection.
- Cover the timing belt with a shop towel to protect the belt.
- Check the intake primary rocker arm of each cylinder at TDC.

1. Remove the cylinder head cover.





2. Plug the relief hole with the special tool.





3. Remove the sealing bolt from the inspection hole and connect the an air pressure regulator with a 0 - 100 psi gauge.

4. Loosen the valve on the air pressure regulator and apply the specified air pressure.

Specified Air Pressure: 250 kPa (2.5 kgf.cm, 36 psi)





5. With the specified air pressure applied, push up the timing plate; the synchronizing piston will pop out and engage the intake secondary rocker arm. Visually check the engagement of the synchronizing piston.

NOTE:
- The synchronizing piston can be seen in the gap between the secondary and primary rocker arms.
- With the timing plate engaged in the groove on the timing piston, the piston is locked in the pushed out position.

6. Stop applying air pressure and push up the timing plate; the synchronizing piston will snap back to its original position. Visually check the disengagement of the synchronizing pistons.

NOTE:
- When the timing plate is pushed up, it releases the timing piston, letting the return spring move the synchronizing piston to its original position.





7. Replace the intake rocker arms as an assembly if either does not work correctly.

8. Remove the special tools.

9. After inspection, check that the Malfunction Indicator Lamp (MIL) does not come on.