Tacoma Regular Cab 4WD L4-2.7L (3RZ-FE) (1999)
Valve Clearance: Testing and Inspection
INSPECTION
HINT: Inspect and adjust the valve clearance when the engine is cold.
1. REMOVE INTAKE AIR CONNECTOR
2. REMOVE PCV HOSES
3. DISCONNECT HIGH-TENSION CORDS FROM SPARK PLUGS
NOTICE: Pulling on or bending the cords may damage the conductor inside.
4. DISCONNECT ENGINE WIRE
a. Disconnect these connectors:
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w/ A/C: A/C compressor connector
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Oil pressure sensor connector
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Engine coolant temperature sender gauge connector
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Ignition Coil connector
b. Disconnect the 4 engine wire clamps and engine wire.
5. REMOVE CYLINDER HEAD COVER
Remove the 10 bolts, seal washers, cylinder head cover and gasket.
6. SET NO.1 CYLINDER TO TDC/COMPRESSION
a. Turn the crankshaft pulley clockwise and align its groove with the "0" mark on the timing chain cover.
b. Check that the timing marks (1 and 2 dots) of the camshaft drive and driven gears are in straight line on the cylinder head surface as shown in
the illustration. If not, turn the crankshaft 1 revolution (360°) and align the marks as above.
7. INSPECT VALVE CLEARANCE