Valve Clearance: Adjustment

NOTE:  Connect the HDS to the DLC , and monitor ECT SENSOR 1. Adjust the valve clearance only when the engine coolant temperature is less than 100 °F (38 °C).

1. Cylinder Head Cover - Remove - Refer to:

   Cylinder Head Cover (6-Speed A/T), ('16-'18 9-Speed A/T) - Removal and Installation or

   Cylinder Head Cover Removal and Installation (9-Speed A/T) (2019 2020 2021) .

2. Valve Clearance - Adjust

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

   1. Set the No. 1 piston at top dead center (TDC). Align the pointer (A) on the front upper cover with the No. 1 piston TDC mark (B) on the front camshaft pulley.

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

   2. Select the correct feeler gauge for the valve clearance you are going to check.   Valve Clearance  Intake: 0.20-0.24 mm (0.008-0.009 in)  Exhaust: 0.28-0.32 mm (0.011-0.012 in)

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

   3. Insert the feeler gauge (A) between the adjusting screw 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.

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

   4. If you feel too much or too little drag, loosen the locknut, and turn the adjusting screw until the drag on the feeler gauge is correct. 5. While holding the adjusting screw with the screw driver, tighten the locknut, then recheck the clearance. Repeat the adjustment, if necessary. Specified Torque  20 N.m (2.0 Kgf-m, 15 lbf.ft)  Apply new engine oil to the nut threads.

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

   6. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 4 piston TDC mark (B) on the front camshaft pulley. 7. Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.

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

   8. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 2 piston TDC mark (B) on the front camshaft pulley. 9. Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.

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

   10. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 5 piston TDC mark (B) on the front camshaft pulley. 11. Check and, if necessary, adjust the valve clearance on the No. 5 cylinder.

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

   12. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 3 piston TDC mark (B) on the front camshaft pulley. 13. Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.

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

   14. Rotate the crankshaft clockwise. Align the pointer (A) on the front upper cover with the No. 6 piston TDC mark (B) on the front camshaft pulley. 15. Check and, if necessary, adjust the valve clearance on the No. 6 cylinder.

3. All Removed Parts - Install

   1. Install the parts in the reverse order of removal.

4. Maintenance Minder - Reset (With Maintenance Minder System)

   1. If the Maintenance Minder™ required to inspect the valve clearance, reset the Maintenance Minder™ with the gauge - Refer to: Resetting the Maintenance Minder™ (2016 2017 2018) or Resetting the Maintenance Minder™ (2019 2020 2021) .