Sienna FWD V6-3.3L (3MZ-FE) (2006)
Valve Clearance: Testing and Inspection
INSPECTION
1. INSPECT VALVE CLEARANCE
a) Turn the crankshaft pulley, and align the timing notch with the timing mark "0" of the No. 1 timing belt cover.
b) Check that the valve lifters on the No. 1 (IN and EX) are both loose. If not, turn the crankshaft 1 revolution (360°) and align the mark as
above.
c) Check the valves indicated in the illustration.
1) Using a feeler gauge, measure the clearance between the valve lifter and the camshaft.
Valve clearance (Cold):
Intake 0.15 to 0.25 mm (0.006 to 0.010 inch)
Exhaust 0.25 to 0.35 mm (0.010 to 0.014 inch)
2) Record out-of-specification valve clearance measurements. They will be used later to determine the required replacement adjusting shim.
d) Turn the crankshaft 2/3 of a revolution (240°), and check the valves indicated in the illustration.