Special Tools Required Valve inspection set 07LAJ-PR30102 VTEC air adapter 07ZAJ-PNA0101
VTEC air stopper
07ZAJ-PNA0200
Air joint adapter
07ZAJ-PNA0300
K20Z2 engine

1. Start the engine and let it run for 5 minutes, then turn OFF the ignition switch.

1. Remove the cylinder head cover.

1. Set the No. 1 piston at top dead center (TDC).

1. Verify that the intake primary rocker arm (A) moves independently of the intake secondary rocker arm (B).
   - If the intake primary rocker arm does not move, remove the primary and secondary rocker arms as an assembly and check that the pistons in the secondary and primary rocker arms move smoothly. If any rocker arm needs replacing, replace the primary and secondary rocker arms as an assembly, and test.
   - If the intake primary rocker arm moves freely, go to Step 5 .

1. Repeat Step 4 on the remaining intake primary rocker arms with each piston at TDC. When all the primary rocker arms pass the test, go to Step 6 .

1. Check that the air pressure on the shop air compressor gauge indicates over 400 kPa (4.0 kgf/cm 2 , 57 psi).

1. Inspect the valve clearance.