Valve Clearance: Adjustments

1. Remove No. 3 timing belt.
2. Disconnect spark plug wires from spark plugs.
3. Remove cylinder head covers.

Fig. 32 Cam Timing Pulley Alignment:

Fig. 33 Valve Clearance Check No. 1:

Fig. 34 Valve Clearance Check No. 2:

4. Set No. 1 cylinder to TDC. Ensure timing marks of camshaft timing pulleys are aligned with timing belt rear plates, Fig. 32. If not, turn crankshaft 360° and recheck.
5. Using a feeler gauge, check clearances while engine is cold. Intake should be between .006-.010 inch. Exhaust should be between .010-.014 inch. Check valves in Fig. 33. first.
6. Turn crankshaft 360° and check valves in Fig. 34.
7. If valves need adjustment, proceed as follows:

Fig. 35 Lifter Shim Removal Tools:

Fig. 36 Lifter Shim Final Removal:

a. Turn crankshaft until cam lobe is positioned upward. Press down lifter using shim too 09248-55011 or equivalent, then place another shim tool between the cam and lifter flange. Using compressed air and a magnet, blow out shim through shim hole, Fig. 35 and 36.
b. Using a micrometer, measure shim thickness.
c. Calculate shim thickness using the following formula: intake N=T+(A-.0008 inch), exhaust N=T+(A-.012 inch): T=Thickness of used shim, A=Measured valve clearance, N=Thickness of new shim.
d. Place new shim on valve lifter. Press down lifter and remove shim removal tools.
e. Recheck valve clearance.
8. Install cylinder head covers.
9. Install spark plug wires.
10. Install No. 3 timing belt covers.