Valve Clearance: Adjustments

Adjusting Valve Clearance





1. Remove valve cover.

Timing Marks For No. 1 Piston To TDC:

2. Set No.1 piston at top dead center. "UP" marks on cam pulleys should be at top, and the top dead center grooves on the back side of the pulleys should align with the cylinder head surface. The distributor rotor must be pointing towards No.1 plug wire.

3. Adjust valves on No.1 cylinder.
Intake: 0.003-0.005 in. (0.08-0.12 mm)
Exhaust: 0.006-0.008 in. (0.16-0.20 mm)

Valve Adjustment Screw:

4. Loosen locknut and turn adjust screw until feeler gauge slides back and forth with a slight amount of drag.
Locknut 7 x 0.75 mm
Torque: 27 N-m (2,7 kg-m, 20 lb-ft)

5. Tighten and check clearance again. Repeat adjustment if necessary.

Timing Marks For No. 3 Piston To TDC:

6. Rotate crankshaft 180° counterclockwise (cam pulley turns 90°). The "UP" marks should be at exhaust side. Distributor rotor should point to No.3 plug wire. Adjust valves on No.3 cylinder.

Timing Marks For No. 4 Piston To TDC:

7. Rotate crankshaft 180° counterclockwise to bring No.4 piston to top dead center. Both "UP" marks should be at bottom and distributor rotor should point to No.4 plug wire. Adjust valves on No.4 cylinder.

Timing Marks For No. 2 Piston To TDC:

8. Rotate crankshaft 180° counterclockwise to bring No.2 piston to top dead center. "UP" marks should be at intake side. Distributor rotor should point to No.2 plug wire. Adjust valves on No.2 cylinder.

9. Using a new gasket, replace valve cover.
Torque: 7 ft.lbs (10 Nm)

Note: If crank pulley bolt broke loose while turning crank, retorque to 108 ft.lbs (150 Nm).