VTEC Rocker Arms Inspection Using Special Tools (D16Y5 engine) CAUTION: 3. Remove the sealing bolt from the inspection hole Before using the Valve Inspection Tool, make sure and connect the an air pressure regulator with a 0 - that the air pressure gauge on the air compressor 100 psi gauge. indicates over 400 kPa (4 kgf/cm², 57 psi). Inspect the valve clearance before rocker arm inspec- tion. Cover the timing belt with a shop towel to protect the belt. Check the intake primary rocker arm of each cylinder at AIR STOPPER 07LAJ-PR3020B TDC. 1. Remove the cylinder head cover. NOTE: Refer to page 6-46 when installing the cylin- der head cover. 2. Plug the relief hole with the special tool. 4. Loosen the regulator valve on the valve inspection tool and apply the specified air pressure. AIR STOPPER 07LAJ-PR3020B Specified Air Pressure: 250 kPa (2.5 kgf/cm², 36 psi) 5. With the specified air pressure applied, push up the 6. Stop applying air pressure and push up the timing timing plate; the synchronizing piston will pop out plate; the synchronizing piston will snap back to its and engage the intake secondary rocker arm. original position. Visually check the engagement of the synchronizing Visually check the disengagement of the synchro- piston. nizing pistons. NOTE: NOTE: The synchronizing piston can be seen in the gap When the timing plate is pushed up, it releases between the secondary and primary rocker arms. the timing piston, letting the return spring move With the timing plate engaged in the groove on the synchronizing piston to its original position. the timing piston, the piston is locked in the pushed out 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. .