Valve Clearance: Notes
NOTE:
Check and adjust valves with engine cold.
NOTE:
Check and adjust valves with engine cold.
- Remove engine undercover. Drain coolant. Remove battery cover. Remove air cleaner inlet. Remove engine cover. Remove air cleaner cover and intake air assembly (air ducting). Disconnect control cables from throttle body.
- Remove timing belt upper covers. Disconnect hoses and electrical connectors as necessary. Remove throttle body. Remove transmission oil dipstick. Remove spark plug wires and spark plugs. Remove cylinder head covers.
- Rotate crankshaft clockwise until piston No. 1 is at TDC of compression stroke. Ensure groove on crankshaft pulley aligns with "0" timing mark on timing belt cover. Timing marks on camshaft pulleys should align with timing marks on timing belt rear plates.
- Measure and record clearance of intake valves for cylinders No. 1, 2, 5, 7 and 8, and exhaust valves for cylinders No. 1, 4 and 8. See Fig 2 and Fig 3. Rotate crankshaft 360 degrees. Measure and record clearance of intake valves for cylinders No. 3, 4 and 6, and exhaust valves for cylinders No. 2, 3, 5, 6 and 7.
- Compare measured clearance with specified clearance. See VALVE CLEARANCE SPECIFICATIONS table. If clearance is within specification, go to step 8). 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 09248-05011), press valve lifter downward. See Fig 1. Install Valve Lifter Stopper (SST 09248-05021) between camshaft and valve lifter. Remove valve lifter press. Using compressed air and magnet, remove shim by blowing air into shim hole.
- 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. Remove valve lifter stopper. Recheck valve clearance after shim is installed.
- To complete installation, reverse removal procedure. Use NEW gaskets as necessary. Tighten nuts and bolts to specification. See TORQUE SPECIFICATIONS .