Valve Clearance: Inspection

WARNING: This page is about a different variant/trim than selected.

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

Set the vehicle onto the lift.
Lift-up the vehicle.
Remove under cover.

Fig 1: Identifying Under Cover
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Lower the vehicle.
Disconnect battery ground cable.

Fig 2: Disconnecting Battery Ground Cable
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Remove timing belt cover (LH).

Fig 3: Identifying Timing Belt Cover
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When inspecting #1 and #3 cylinders
1. Remove air intake duct as a unit.
  
  Fig 4: Locating Air Intake Duct
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2. Remove bolt, and then remove resonator chamber.
  
  Fig 5: Removing Resonator Chamber Bolts
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3. Disconnect spark plug cords from spark plugs (#1 and #3 cylinders).
  < Ref. to REMOVAL , SPARK PLUG. >
  
  Fig 6: Disconnecting Spark Plug Cords
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4. Disconnect PCV hose from rocker cover (RH).
5. Remove bolts, then remove rocker cover (RH).
When inspecting #2 and #4 cylinders;
1. Disconnect battery cables, and then remove battery and battery carrier.
  
  Fig 7: Removing Battery And Battery Carrier
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2. Remove the two bolts which hold washer tank.
  
  Fig 8: Locating Washer Tank Bolts
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3. Disconnect washer motor connectors.
  
  Fig 9: Disconnecting Washer Motor Connectors
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4. Move washer tank to forward.
  
  Fig 10: Identifying Washer Tank
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5. Disconnect spark plug cords from spark plugs (#2 and #4 cylinders).
  < Ref. to REMOVAL , SPARK PLUG. >
6. Disconnect PCV hose from rocker cover (LH).
7. Remove bolts, then remove rocker cover (LH).
Set #1 cylinder piston to top dead center of compression stroke by rotating crankshaft pulley clockwise.
NOTE: When arrow mark (A) on camshaft sprocket (LH) comes exactly to the top, #1 cylinder piston is brought to the top dead center of compression stroke.

Fig 11: Identifying Arrow Mark On Cam Sprocket
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Measure #1 cylinder valve clearance by using thickness gauge.
NOTE:
- Insert the thickness gauge (A) in as horizontal a direction as possible with respect to the valve stem end face.
- Measure exhaust valve clearances while lifting-up the vehicle.
Valve clearance:

Intake;

0.20±0.04 mm (0.0079±0.0016 in)

Exhaust;

0.25±0.04 mm (0.0098±0.0016 in)

Fig 12: Identifying Thickness Gauge
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If necessary, adjust the valve clearance. < Ref. to ADJUSTMENT , Valve Clearance. >
Similar to measurement procedures used for #1 cylinder, measure #2, #3 and #4 cylinder valve clearances.
NOTE:
- Be sure to set cylinder pistons to their respective top dead centers on compression stroke before measuring valve clearances.
- To set #3, #2 and #4 cylinder pistons to their top dead centers on compression stroke, turn crankshaft pulley clockwise 90° at a time starting with arrow mark on left-hand camshaft sprocket facing up.
Fig 13: Identifying Arrow Mark On Cam Sprocket
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After inspection, install the related parts in the reverse order of removal.
Tightening torque:

Resonator chamber;

33 N.m (3.4 kgf-m, 24.6 ft-lb)

Fig 14: Removing Resonator Chamber Bolts
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