Valve Clearance: Adjustments
Valve Clearance Adjustment (1.6L LDE, LXV, 1.8L 2H0, and LUW)
Special Tools
* EN-845 - Suction Device
* EN-6361 - Feeler Gauge
* EN-6628-A - Locking Tool
For equivalent regional tools, refer to Special Tools (Special Tools).
Removal Procedure
1. Remove the camshaft adjuster. Refer to Camshaft Position Actuator Adjuster Removal (51. Camshaft Position Actuator Adjuster Removal).
2. Remove the timing belt rear cover. Refer to Timing Belt Rear Cover Replacement (1.6L LDE, LXV, 1.8L 2H0, and LUW) (Timing Belt Rear Cover Replacement).
3. Remove exhaust camshaft position sensor. Refer to Camshaft Position Sensor Replacement (1.6L LDE, LXV, and 1.8L 2H0) (Service and Repair).
4. Remove intake camshaft position sensor. Refer to Camshaft Position Sensor Replacement (1.6L LDE, LXV, and 1.8L 2H0) (Service and Repair).
5. Remove the EN-6628-A - locking tool.
Adjustment Procedure
1. Inspect the 2 valve lash, intake valve cylinder 1.
1. Turn the intake camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 1 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
2. Inspect the 2 valve lash, intake valve cylinder 3.
1. Turn the intake camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 3 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
3. Inspect the 2 valve lash, intake valve cylinder 4.
1. Turn the intake camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 4 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
4. Inspect the 2 valve lash, intake valve cylinder 2.
1. Turn the intake camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 2 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
5. Inspect the 2 valve lash, exhaust valve cylinder 4.
1. Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 4 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
6. Inspect the 2 valve lash, exhaust valve cylinder 2.
1. Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 2 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
7. Inspect the 2 valve lash, exhaust valve cylinder 1.
1. Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon until the cams of cylinder 1 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
8. Inspect the 2 valve lash, exhaust valve cylinder 3.
1. Turn the exhaust camshaft in the direction of engine rotation by the camshaft hexagon gear until the cams of cylinder 3 are in the test position.
2. Insert the EN-6361 - gauge , inspect the valve lash.
Write down the result.
Note: Note the removal sequence 1-4.
9. Remove the 4 camshaft bearing support bolts.
10. Release the bearing support by striking it gently with a plastic hammer.
11. Remove the 1st camshaft bearing support (1).
Note: Mark the exhaust camshaft bearing caps before removal.
12. Loosen the 8 exhaust camshaft bearing cap bolts working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
13. Remove the 8 exhaust camshaft bearing cap bolts.
14. Remove the 4 exhaust camshaft bearing caps Numbers 6-9 from the cylinder head.
15. Remove the exhaust camshaft (1).
Note: Mark the intake camshaft bearing caps before removal.
16. Loosen the 8 intake camshaft bearing cap bolts working from outside to inside in a spiral in steps of 1/2 up to 1 turn.
17. Remove the 8 intake camshaft bearing cap bolts.
18. Remove the 4 intake camshaft bearing caps Numbers 2-5 from the cylinder head.
19. Remove the intake camshaft (1).
20. Using the EN-845 - device (1), remove the 16 valve tappets.
21. Example for determine valve tappet size.
1. Measurement of the cup tappet installed 3.12 mm (0.123 in) , identification number 12.
2. Measured value between cams and cup tappets +0.31 mm (0.012 in) = 3.43 mm (0.135 in).
3. Required value, intake valve lash - 0.25 mm (0.010 in).
Note: The identification number, arrow, is on the inside of the valve tappet.
4. Measurement of the new cup tappet = 3.18 mm (0.125 in) , identification number 18.
5. Use a valve tappet with this dimension or one that is nearest to it.
22. Refer to Engine Mechanical Specifications (Service Limits & General Specifications) for the valve clearance values.
23. Refer to Electronic Parts Catalogue for the valve tappers sizes.
Installation Procedure
Note: Observe the correct assignment.
Note: Coat the sliding surfaces with NEW engine oil.
1. Install the 16 valve lifter (1) use the EN 845 - suction device.
2. Install the camshafts. Refer to Camshaft Replacement (Camshaft Replacement).