NOTE Check and adjust valve clearance with engine cold

1. Remove intake manifold cover located on top of engine, above intake manifold. Intake manifold cover may also be referred to as "V" bank cover. Drain cooling system if any coolant hoses must be disconnected for access to valve covers.

2. Remove air cleaner assembly with air intake hose that goes to throttle body. Remove bolts/nuts and No. 3 timing belt cover from front of each cylinder head at each camshaft. See Fig. 20 . Disconnect electrical connector at each ignition coil. Remove bolts and ignition coils from valve covers.

3. Remove transmission oil dipstick. Disconnect necessary hoses and engine wiring brackets for access to valve covers. Remove bolts, seal washers, valve covers and gaskets.

4. Rotate crankshaft pulley clockwise, as viewed from front of engine, so crankshaft pulley groove aligns with "0" mark on No. 1 (lower) timing belt cover and cylinder No. 1 is at TDC on compression stroke. Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. See Fig. 2 .

2001 ENGINES 4.7L V8

Valve Clearance
Fig. 2: Identifying Cylinder Numbers & Valve Arrangement Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5. Ensure timing marks on camshaft sprockets align with timing marks on timing belt rear plate. See Fig. 3

2001 ENGINES 4.7L V8

If timing marks are not aligned, rotate crankshaft clockwise one full revolution (360 degrees) and realign crankshaft pulley groove with "0" mark on No. 1 (lower) timing belt cover.

2001 Toyota Sequoia Valve Adjustment

Fig. 3: Aligning Timing Marks

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

Fig. 3: Aligning Timing Marks

Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6. Using feeler gauge, measure valve clearance between valve lifter and camshaft on intake valves on cylinders No. 1, 2, 5, 7 and 8, and exhaust valves on cylinders No. 1, 4 and 8. Perform STEP 1 in illustration. See Fig. 2 . Record valve clearance.

7. Rotate crankshaft pulley clockwise one full revolution (360 degrees). Using feeler gauge, measure valve clearance between valve lifter and camshaft on intake valves on cylinders No. 3, 4 and 6, and exhaust valves on cylinders No. 2, 3, 5, 6 and 7. Perform STEP 2 in illustration. See Fig. 2 . Record valve clearance.

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Responses

  • savanna
    How to set valve clearance on 3 cylinder engine?
    8 years ago
  • Frank
    How to replace time belt toyota sequoia 2001 4.7?
    8 years ago
  • Aziza
    How to adjust valves on a 08 toyota yaris?
    2 years ago
  • Dora
    How to know intake and exhaute Toyota valve?
    2 years ago

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