Rocker Arm and Shaft Inspection

Remove the rocker arm assembly (see ROCKER ARM ASSEMBLY REMOVAL ).
Disassemble the rocker arm assembly (see ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY ).
Measure the diameter of the shaft at the first rocker location.

Fig 1: Measuring Diameter Of Shaft At First Rocker Location
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Zero the gauge (A) to the shaft diameter.

Fig 2: Zero Gauge To Shaft Diameter
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the inside diameter of the rocker arm, and check it for an out-of-round condition.
Rocker Arm-to-Shaft Clearance

Standard (New): 0.019-0.050 mm (0.00075-0.00197 in)

Service Limit: 0.08 mm (0.0031 in)

Fig 3: Measuring Inside Diameter Of Rocker Arm
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Repeat for all rockers and shaft. If the clearance is beyond the service limit, replace the rocker shaft and all out of service limit rocker arms. If any VTEC rocker arm needs replacement, replace the rocker arms as an assembly.
VTEC Rocker Arms
Inspect the rocker arm pistons (A). Push on them manually. If they do not move smoothly, replace the rocker arm set.
NOTE:
- Apply new engine oil to the rocker arm pistons when reassembling.
- When reassembling the secondary rocker arm A, carefully apply air pressure to the oil passage of the rocker arm.
  
  Fig 4: Inspecting Rocker Arm Pistons
  Courtesy of AMERICAN HONDA MOTOR CO., INC.
Reassemble the rocker arm assembly (see ROCKER ARM AND SHAFT DISASSEMBLY/REASSEMBLY ).
Install the rocker arm assembly (see ROCKER ARM ASSEMBLY INSTALLATION ).