Valve Clearance Adjustment

Remove the 2 nuts and No. 1 engine cover sub-assembly.

Disconnect the 4 ignition coil connectors.

Remove the 4 bolts and 4 ignition coils.

Remove the 4 spark plugs.

Remove the 2 ventilation hoses from the cylinder head cover sub-assembly.

Remove the 2 bolts and separate the 2 wire harness brackets.

Remove the 8 bolts and 2 nuts, then remove the cylinder head cover sub-assembly and gasket.

Turn the crankshaft pulley until the groove and the timing mark "0" on the timing chain cover are aligned.

Check that each timing mark on the camshaft timing gear and sprocket is aligned with each timing mark located on the No. 1 and No. 2 bearing caps as shown in the illustration.
If not, turn the crankshaft pulley 1 revolution (360°) to align the timing marks as illustrated.

Place paint marks on the chain in alignment with the timing marks on the camshaft timing gear and camshaft timing sprocket.

Check only the valves indicated in the illustration.

1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
   

   Standard Valve Clearance (Cold):

   Item	Specified Condition
   Intake	0.19 to 0.29 mm (0.00748 to 0.0114 in.)
   Exhaust	0.38 to 0.48 mm (0.0150 to 0.0189 in.)

2. Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve clearance lifters.
   

Turn the crankshaft 1 revolution (360°) and set the No. 4 cylinder to TDC/compression.

Check only the valves indicated in the illustration.

1. Using a feeler gauge, measure the clearance between the valve lifter and camshaft.
   

   Standard Valve Clearance (Cold):

   Item	Specified Condition
   Intake	0.19 to 0.29 mm (0.00748 to 0.0114 in.)
   Exhaust	0.38 to 0.48 mm (0.0150 to 0.0189 in.)

2. Record any out-of-specification valve clearance measurements. They will be used later to determine the required replacement valve lifters.
   

Set No. 1 cylinder to TDC/compression (COROLLA_ZRE142 RM0000032Z3011X_01_0006.html).

Remove the No. 1 chain tensioner (COROLLA_ZRE142 RM0000032Z3011X_01_0013.html).

Loosen the camshaft timing sprocket (COROLLA_ZRE142 RM0000032Z3011X_01_0007.html).

Remove the No. 2 camshaft (COROLLA_ZRE142 RM0000032Z3011X_01_0008.html).

Remove the camshaft (COROLLA_ZRE142 RM0000032Z3011X_01_0009.html).

Remove the valve lifters.

Using a micrometer, measure the thickness of the removed valve lifters.

Calculate the thickness of a new lifter so that the valve clearance comes within the specified values.

New Lifter Thickness:

Item	Specification
Intake	A = B + (C - 0.24 mm (0.00945 in.))
Exhaust	A = B + (C - 0.43 mm (0.0169 in.))

1. Measured intake valve clearance = 0.40 mm (0.0157 in.)
   (Measured - Specification = Excess clearance)
   
1. 0.40 mm (0.0157 in.) - 0.24 mm (0.00945 in.) = 0.16 mm (0.00630 in.)
   
2. Measured used lifter thickness = 5.250 mm (0.2067 in.)
   
3. New lifter thickness = 5.410 mm (0.2130 in.)
   (Excess clearance + Used lifter thickness = Ideal new lifter)
   
1. 0.16 mm (0.00630 in.) + 5.250 mm (0.2067 in.) = 5.410 mm (0.2130 in.)
   
4. Closest new lifter = 5.420 mm (0.2134 in.)
   
1. Select No. 42 lifter
   

Select a new lifter with a thickness as close as possible to the calculated values.

HINT:

1. Lifters are available in 35 sizes in increments of 0.020 mm (0.000787 in.), from 5.060 to 5.740 mm (0.1992 to 0.2260 in.).
   


2. The identification number inside the valve lifters shows the value to 2 decimal places. (The illustration shows 5.420 mm (0.2134 in.)
   

Valve lifter selection chart (intake).

Standard intake valve clearance (cold):

0.19 to 0.29 mm (0.00748 to 0.0114 in.)

Valve lifter selection chart (exhaust).

Standard exhaust valve clearance (cold):

0.38 to 0.48 mm (0.0150 to 0.0189 in.)

Install the selected valve lifter.

Install the camshaft (COROLLA_ZRE142 RM0000032Z4011X_01_0001.html).

Install the No. 2 camshaft (COROLLA_ZRE142 RM0000032Z4011X_01_0002.html).

Install the No. 1 chain tensioner (COROLLA_ZRE142 RM0000032Z4011X_01_0012.html).

Remove any old packing material from the contact surface.

Apply seal packing to the 2 locations shown in the illustration.

Seal packing:

Toyota Genuine Seal Packing Black, Three Bond 1207B or equivalent

NOTICE:

1. Remove any oil from the contact surface.
   
2. Install the oil pan within 3 minutes of applying seal packing.
   
3. Do not add engine oil for at least 2 hours after installing the oil pan.
   

Install the cylinder head cover gasket and sub-assembly with the 8 bolts and 2 nuts.

Torque:

Bolt A:

11 N*m{112 kgf*cm, 8 ft.*lbf}

Bolt B:

14 N*m{143 kgf*cm, 10 ft.*lbf}

Nut:

11 N*m{112 kgf*cm, 8 ft.*lbf}

Install the 2 engine wire harness brackets with the 2 bolts.

Torque:

8.4 N*m{86 kgf*cm, 74 in.*lbf}

Connect the 2 ventilation hoses to the cylinder head cover.

Install the 4 spark plugs.

Torque:

19 N*m{194 kgf*cm, 14 ft.*lbf}

Install the 4 ignition coils with the 4 bolts.

Torque:

9.0 N*m{92 kgf*cm, 80 in.*lbf}

Connect the 4 ignition coil connectors.

Warm up and stop the engine.

When using the Techstream:

1. Connect the Techstream to the DLC3.
   

2. Turn the ignition switch to ON.
   

3. Turn the Techstream on.
   

4. Enter the following menus: Power Train / Engine and ECT / Data List / IGN Advance
   

5. Start the engine.
   

6. According to the display on the Techstream, read the Data List.
   

   Standard ignition timing:

   5 to 15° BTDC at idle
   

7. Check that the ignition timing advances immediately when the engine speed is increased.
   

8. Turn the ignition switch off.
   

9. Disconnect the Techstream from the DLC3.
   

When not using the Techstream:

1. Remove the No. 1 engine cover sub-assembly (COROLLA_ZRE142 RM000001BC301CX_01_0101.html).
   





2. Open the ignition cover located to the right of the No. 4 ignition coil.
   

3. Pull the wire harness out from the IG cover.
   

4. Connect the timing light to the wire harness.
   

   NOTICE:

   Use a timing light that detects the primary signal.





5. Using SST, connect terminals 13 (TC) and 4 (CG) of the DLC3.
   

   SST

   09843-18040
   

6. Allow the engine to idle and check the ignition timing.
   

   Standard ignition timing:

   8 to 12° BTDC at idle
   

   HINT:

   Run the engine at 1000 to 1300 rpm for 5 seconds, then check that the engine speed returns to idle speed.

7. Disconnect SST from terminals 13 (TC) and 4 (CG) of the DLC3.
   

8. Allow the engine to idle and check the ignition timing.
   

   Standard ignition timing:

   5 to 15° BTDC at idle
   

9. Check that the ignition timing advances immediately when the engine speed is increased.
   

10. Turn the ignition switch off.
    

11. Remove the timing light.
    

12. Close the IG cover.
    

13. Install the No. 1 engine cover sub-assembly (COROLLA_ZRE142 RM000001BC101CX_01_0268.html).
    

Install the No. 1 engine cover sub-assembly with the 2 nuts.