Valve Clearance Adjustment: Adjustment

How to use this service information .

Valve Clearance - Adjust

Preconditions

Engine Cooled Down (Engine Coolant Temperature Less than 100°F (38°C))
Cylinder Head Cover Removed

Figure 1

Courtesy of HONDA, U.S.A., INC.

Procedure/Specifications

1. Inspect the camshaft timing .

2. Select the correct feeler gauge for the valve clearance you are going to check.

Specifications (Figure 1)

Position		Standard Value (New)
a	Intake	0.21-0.25 mm (0.0083-0.0098 in)
b	Exhaust	0.25-0.29 mm (0.0098-0.0114 in)

Figure 2

Courtesy of HONDA, U.S.A., INC.

3. Insert the feeler gauge (c) between the adjusting screw (d) and the end of the valve stem on the No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag. (Figure 2)

Tool Details (Figure 2)

Name
c	Feeler Gauge

Figure 3

Courtesy of HONDA, U.S.A., INC.

4. If you feel too much or too little drag, loosen the locknut with the locknut wrench, and turn the adjusting screw with the adjuster until the drag on the feeler gauge is correct. (Figure 3)

5. Tighten the locknut to the specified torque , and recheck the clearance. Repeat the adjustment if necessary. (Figure 3)

Lubricant Specifications

Position	Type
Nut Threads	Engine Oil

Figure 4

Courtesy of HONDA, U.S.A., INC.

6. Rotate the crankshaft clockwise. The "3" mark (e) on VTC actuator B should be at the top. (Figure 4)

7. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.

Figure 5

Courtesy of HONDA, U.S.A., INC.

8. Rotate the crankshaft clockwise. The "4" mark (f) on VTC actuator B should be at the top. (Figure 5)

9. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.

Figure 6

Courtesy of HONDA, U.S.A., INC.

10. Rotate the crankshaft clockwise. The "2" mark (g) on VTC actuator B should be at the top. (Figure 6)

11. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.