Valve Clearance: Testing and Inspection
Valve ClearanceINSPECTION
NOTE: Inspection and adjustment of valve clearance should be performed while engine is cold.
1. Set the vehicle on a lift.
2. Remove the collector cover.
3. Disconnect the ground cable from the battery.
4. Lift up the vehicle.
5. Remove the under cover.
6. Lower the vehicle.
7. When inspecting RH side cylinders:
1. Remove the air intake duct and air cleaner case.
2. Remove the fuel pipe protector (RH).
3. Disconnect the connector of oil pressure switch.
4. Remove the ignition coil.
5. Remove the rocker cover (RH).
8. When inspecting LH side cylinders:
1. Disconnect the battery cable, and then remove the battery and battery carrier.
2. Disconnect the PCV hose and blow-by hose from the rocker cover (LH).
3. Remove the fuel pipe protector (LH).
4. Remove the ignition coil.
5. Remove the rocker cover (LH).
9. Turn the crankshaft clockwise until the cam is set to position shown in the figure.
10. Measure the clearance of intake valve and exhaust valve using thickness gauge (A).
NOTE:
^ Measure it within the range of ±30 degrees from specified position shown in the figure.
^ Measure it in low lift cam for intake side.
^ Insert a thickness gauge in a direction as horizontal as possible with respect to the valve lifter.
Valve clearance
Intake: 0.20+0.04 -0.06 MM (0. 0079+0.0016 -0.0024 in)
Exhaust: 0.35 ± 0.05 mm (0.0138 ± 0.0020 in)
^ If the measured value is not within specification, take notes of the value in order to adjust the valve clearance later on.
11. If necessary, adjust the valve clearance.
12. Further turn the crank pulley clockwise and then measure the valve clearances again.
13. After inspection, install the related parts in the reverse order of removal.