Valve Clearance Adjustment
Note. Adjust the valves only when the cylinder head temperature is less than 100°F (38°C).
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- Remove the intake manifold (see «REMOVAL»(ref-243299-S01672347802006082300000) ).
- Remove the cylinder head covers (see «CYLINDER HEAD COVER REMOVAL»(ref-243305-S39835667762006082300000) ).
- 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.
- Select the correct thickness feeler gauge for the valves you're going to check. Valve Clearance Intake: 0.20-0.24 mm (0.008-0.009 in.) Exhaust: 0.28-0.32 mm (0.011-0.013 in.) REAR FRONT
- Insert the feeler gauge (A) between the adjusting screw and the end of the valve stem on No. 1 cylinder, and slide it back and forth; you should feel a slight amount of drag.
- If you feel too much or too little drag, loosen the lock nut (A), and turn the adjusting screw (B) until the drag on the feeler gauge is correct.
- Torque the locknut and recheck the clearance. Repeat the adjustment, if necessary.
- 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.
- Check and, if necessary, adjust the valve clearance on No. 4 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on No. 2 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on No. 5 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on No. 3 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on No. 6 cylinder.
- Install the cylinder head covers (see «CYLINDER HEAD COVER INSTALLATION»(ref-243305-S03245468552006082300000) ).
- Install the intake manifold (see «INSTALLATION»(ref-243299-S31351122112006082300000) ).
Note. Adjust the valves only when the cylinder head temperature is less than 100°F (38°C).
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- Remove the cylinder head covers (see «CYLINDER HEAD COVER REMOVAL»(ref-243305-S37187498242006082300000) ).
- 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.
- Select the correct thickness feeler gauge for the valves you're going to check. Valve Clearance Intake: 0.20-0.24 mm (0.008-0.009 in.) Exhaust: 0.28-0.32 mm (0.011-0.013 in.)
- 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.
- If you feel too much or too little drag, loosen the lock nut, and turn the adjusting screw until the drag on the feeler gauge is correct.
- While holding the adjusting screw with the screw driver, tighten the lock nut and recheck the clearance. Repeat the adjustment, if necessary. Specified Torque Front: 14 N.m (1.4 kgf.m, 10 lbf.ft) Apply new engine oil to the nut threads. Rear: 20 N.m (2.0 kgf.m, 14 lbf.ft)
- 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.
- Check and, if necessary, adjust the valve clearance on the No. 4 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on the No. 2 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on the No. 5 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on the No. 3 cylinder.
- 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.
- Check and, if necessary, adjust the valve clearance on the No. 6 cylinder.
- Install the cylinder head covers (see «CYLINDER HEAD COVER INSTALLATION»(ref-243305-S02060717252006082300000) ).