VTEC Rocker Arm Test

VTEC Rocker Arm Test

Special Tools Required

- Air pressure regulator 07AAJ-PNAA101
- VTEC air adapter 070AJ-001A101
1. Start the engine, and let it run for 5 minutes, then turn the ignition switch to LOCK (0).

2. Remove the cylinder head cover. Cylinder Head Cover Removal

3. Rotate the crankshaft clockwise, and visually check that all the primary rocker arms (A) and secondary rocker arms (B) move freely.
- If the primary rocker arm and secondary rocker arm move together, remove the primary and secondary rocker arms as an assembly, and check that the pistons in the primary and secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, then retest.

- If all the primary rocker arms and secondary rocker arms move freely, go to step 4.

4. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4 kgf/cm2, 57 psi).

5. Inspect the valve clearance. Adjustments






6. Install the VTEC air adapter (A) to the inspection hole, then connect the air pressure regulator (B).

7. Loosen the valve on the regulator, and apply the specified air pressure.

Specified Air Pressure:
340 kPa (3.5 kgf/cm2, 50 psi)






8. With the specified air pressure applied, rotate the crankshaft clockwise, and visually check that all the primary rocker arms (A) and secondary rocker arms (B) move together.
If the primary rocker arm and secondary rocker arm move freely and independently of each other, remove the primary and secondary rocker arms as an assembly, and check that the pistons in the primary and secondary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and test.

9. Remove the air supply and the VTEC air adapter.

10. Install the cylinder head cover. Cylinder Head Cover Installation