For 1990-2009 cars

### Removal Procedure

1. Remove the timing belt. Refer to Timing Belt Replacement.
2. Remove the engine cover bolts.
3. Remove the engine cover.
4. Disconnect the breather tube from the valve cover.
5. Disconnect the crankcase ventilation tube from the valve cover.
6. Disconnect the camshaft position (CMP) sensor connector.
7. Disconnect the ignition wires from the spark plugs.
8. Remove the valve cover bolts.
9. Remove the valve cover and gasket.

Caution: Use extreme care when removing the camshaft not to nick, scratch, or damage the camshaft lobes or bearing surfaces.

10. While holding the intake camshaft firmly in place, remove the intake camshaft gear bolt.
11. Remove the intake camshaft gear.
12. While holding the exhaust camshaft firmly in place, remove the exhaust camshaft gear bolt.
13. Remove the exhaust camshaft gear.
14. Remove the camshaft cap bolts gradually and in the sequence shown for each camshaft cap.
15. Remove the intake camshaft caps. Maintain the correct positions for installation.
16. Remove the intake camshaft.
17. Remove the exhaust camshaft caps. Maintaining the correct positions for installation.
18. Remove the exhaust camshaft.

### Installation Procedure

Caution: Use extreme care when installing the camshaft not to nick, scratch, or damage the camshaft lobes or bearing surfaces.

1. Lubricate the camshaft journals and the camshaft caps with engine oil.
2. Install the intake camshaft.
3. Install the intake camshaft caps in their original positions.
4. Install the intake camshaft cap bolts.
5. Install the exhaust camshaft.
6. Install the exhaust camshaft caps in their original positions.
7. Install the exhaust camshaft cap bolts.

Caution: Refer to Fastener Caution in the Preface section.

8. Tighten the camshaft cap bolts gradually and in the sequence shown for each camshaft cap.

Tighten
Tighten the camshaft cap bolts to 16 N·m (12 lb ft).

9. Measure the intake camshaft end play and the exhaust camshaft end play. Refer to Engine Mechanical Specifications.
10. Install the intake camshaft gear.
11. While holding the intake camshaft firmly in place, install the intake camshaft gear bolt.

Tighten
Tighten the intake camshaft gear bolt to 67.5 N·m (49 lb ft).

12. Install the exhaust camshaft gear.
13. While holding the exhaust camshaft firmly in place, install the exhaust camshaft gear bolt.

Tighten
Tighten the exhaust camshaft gear bolt to 67.5 N·m (49 lb ft).

14. Install the valve cover and the valve cover gasket.
15. Install the valve cover washers.
16. Install the valve cover nuts.

Tighten
Tighten the valve cover nuts to 9 N·m (80 lb in).

17. Connect the ignition wires to the spark plugs.
18. Connect the CMP sensor.
19. Install the engine cover.
20. Install the engine cover bolts.

Tighten
Tighten the engine cover bolts to 3 N·m (27 lb in).

21. Install the oil filler cap.
22. Connect the vacuum line.
23. Connect the air breather tube to the valve cover.
24. Install the timing belt. Refer to Timing Belt Replacement.