Valve Clearance: Notes
CAUTION:
DO NOT rotate crankshaft counterclockwise as viewed from front of engine.
NOTE:
Adjust valves with engine cold.
- Disconnect negative battery cable. Wait at least 90 seconds to allow air bag system back-up power supply to be depleted. Drain engine coolant. Disconnect control cables from throttle linkage. Remove intake air hose. Remove EGR pipe and gasket. Remove throttle body bracket between throttle body and cylinder head.
- Remove throttle body and intake air connector (pipe between throttle body and air intake chamber) as an assembly. Remove timing belt cover No. 3 (upper outer cover). Remove cylinder head rear cover (small cover on top of cylinder head, near rear end).
- Disconnect spark plug wires from plugs and wire holders. Remove cylinder head covers and gaskets. Rotate crankshaft clockwise until cylinder No. 1 is at TDC of compression stroke. Groove on crankshaft pulley should be aligned with "0" timing mark on timing belt cover, and timing marks on camshaft pulleys should be aligned with timing marks on timing belt cover No. 4 (upper inner cover).
- Measure and record clearance of intake valves for cylinders No. 1, 2 and 4, and exhaust valves for cylinders No. 1, 3 and 5. See Fig 2. Rotate crankshaft 360 degrees. Measure and record clearance of intake valves for cylinders No. 3, 5 and 6, and exhaust valves for cylinders No. 2, 4 and 6.
- Compare measured clearance with specified clearance. See VALVE CLEARANCE SPECIFICATIONS table. If clearance is within specification, go to step 9). If clearance is not within specification, rotate crankshaft until camshaft lobe of valve to be adjusted is facing upward, away from shim.VALVE CLEARANCE SPECIFICATIONS
Application In. (mm) Intake .006-.010 (.15-.25) Exhaust .010-.014 (.25-.36) - Using a screwdriver, rotate valve lifter until notch is at a 90-degree angle to camshaft (perpendicular), facing centerline of cylinder head. Using Valve Lifter Press (SST 09248-05410), press valve lifter downward. See Fig 1.
- Position Valve Lifter Stopper (SST 09248-05420) between camshaft and valve lifter to keep valve lifter held down. Remove valve lifter press. Using a small screwdriver and magnet, remove shim. Select a shim of appropriate thickness. See SELECTING SHIMS at end of VALVE CLEARANCE .
- Place shim onto valve lifter with imprinted numbers facing down. Press downward on valve lifter using valve lifter press, and remove valve lifter stopper. Recheck valve clearance to ensure it is correct.
- To complete installation, reverse removal procedure. Use NEW gaskets as necessary. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS .