Supra Sport Roof L6-2997cc 3.0L DOHC MFI (1998)
8. REMOVE CYLINDER HEAD COVERS
9. SET NO.1 CYLINDER TO TOP DEAD CENTER (TDC)/COMPRESSION
a. Turn the crankshaft pulley and align its groove with the timing mark "0" of the No.1 timing belt cover.
NOTICE: Always turn the crankshaft clockwise.
b. Check that the timing marks of the camshaft timing pulleys are aligned with the timing marks of the No.4 timing belt cover.
If not, turn the crankshaft 1 revolution (360°).
10. INSPECT VALVE CLEARANCE
a. Check only those valves indicated in the illustration.
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Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
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Record the valve clearance measurements of those that are out of specification. They will be used later to determine the required
replacement adjusting shim.
Valve clearance (Cold):
Intake 0.15 - 0.25 mm (0.006 - 0.010 inch)
Exhaust 0.25 - 0.35 mm (0.010 - 0.014 inch)
b. Turn the crankshaft pulley 1 revolution (360°), and align the groove with the timing mark "0" of the No.1 timing belt cover.
c. Check only the valves indicated as shown. Measure the valve clearance.
