Valve Clearance: Testing and Inspection

A: INSPECTION

CAUTION: Inspection and adjustment of valve clearance should be performed while engine is cold.

1. Set the vehicle on the lift.





2. Disconnect battery ground cable.
3. Lift up the vehicle.





4. Remove under cover.
5. Lower the vehicle.
6. Place suitable container under the vehicle.
7. When inspecting RH side cylinder.
1. Remove air intake duct and air cleaner case.
2. Remove V-belt.





3. Remove power steering hose from bracket.





4. Remove bolts which install power steering pump bracket.





5. Remove power steering tank from the bracket by pulling it upward.





6. Place power steering pump on the right side wheel apron.





7. Remove fuel pipe protector RH.





8. Disconnect fuel injector connectors.





9. Disconnect front oxygen (A/F) sensor connector.





10. Disconnect oil pressure switch connector.
11. Remove ignition coils.
12. Remove rocker cover RH.
8. When inspecting LH side cylinder.
1. Set the vehicle on the lift.
2. Remove battery.





3. Remove washer tank mounting bolts.





4. Disconnect washer motor connectors.





5. Move washer tank upward.





6. Disconnect PCV and blow-by hose from rocker cover LH.





7. Remove fuel pipe protector LH.
8. Disconnect fuel injector connectors. (A)





9. Disconnect front oxygen (A/F) sensor connector. (B)
10. Remove ignition coils.
11. Remove rocker cover LH.





9. Using the ST, turn the crankshaft clockwise. Adjust the camshaft position so that the cam lobe is perpendicular to the shim as shown in the figure.
ST 18252AA000 CRANKSHAFT SOCKET





10. Measure intake valve and exhaust valve clearances by using thickness gauge (A).

CAUTION: Insert the thickness gauge in as horizontal a direction as possible with respect to the shim.

Valve clearance:
Intake: 0.20 [+0.04/-0.06] mm (0.0079 [+0.0016/-0.0024] inch)
Exhaust: 0.25 ± 0.05 mm (0.0098 ± 0.0020 inch)

NOTE: 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 crankshaft pulley clockwise. Using the same procedure described previously, then measure valve clearances again.
13. After inspection, install the related parts in the reverse order of removal.