CAUTION:
If engine oil is spilt onto the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.
NOTE:
Adjustment of valve clearance should be performed while engine is cold.
1. Remove the engine from the vehicle. 
2. Measure all the valve clearances.
(1) Remove the rear side belt.
(2) Remove the timing belt cover RH.
(3) Remove the clip which holds the engine harness to the rocker cover RH.
(4) Remove the ignition coil.
(5) Disconnect the PCV hose from the rocker cover.
(6) Remove the rocker cover.
(7) Turn the crank pulley clockwise until the round mark and arrow mark on the cam sprocket are set to position shown in the figure.
NOTE:
Turn the crank pulley using a socket wrench.
• Measurement of clearance of #1 cylinder intake valve and #3 cylinder exhaust valve
• Measurement of clearance of #2 cylinder exhaust valve and #3 cylinder intake valve
• Measurement of clearance of #2 cylinder intake valve and #4 cylinder exhaust valve
• Measurement of clearance of #1 cylinder exhaust valve and #4 cylinder intake valve
(8) Measure the clearance of intake valve and exhaust valve using thickness gauge (A).
NOTE:
• Insert a thickness gauge in a direction as horizontal as possible with respect to the valve lifter.
• Record the measured value of each valve clearance.
3. Remove the camshaft.
4. Remove the valve lifter.
5. Measure the thickness of valve lifter using micrometer.
6. Select a valve lifter of suitable thickness using the measured valve clearance and valve lifter thickness, and install it.
NOTE:
Use a new valve lifter.
|
Unit: mm (in) |
|
Intake valve: S = (V + T) − 0.19 (0.0075) Exhaust valve: S = (V + T) − 0.35 (0.0138) |
|
S: Valve lifter thickness required V: Measured valve clearance T: Valve lifter thickness to be used |
7. Install the camshaft.
8. Install the cam sprocket.
9. Install the timing belt.
10. Measure all valves for valve clearance again at this time. If the valve clearance is not within the adjustment value, repeat the procedure over again from step 3).
Valve clearance (adjustment value):
Intake
0.20+0.01 −0.03 mm (0.0079+0.0004 −0.0012 in)
Exhaust
0.35±0.02 mm (0.0138±0.0008 in)
11. After adjustment, install the related parts in the reverse order of removal.
NOTE:
Refer to “Camshaft” when installing the rocker cover.