Cylinder Head Removal

Cylinder Head - Illustrated Index Part 1:

Cylinder Head - Illustrated Index Part 2:

Illustrated Index

CAUTION:
- To avoid damage, wait until the engine coolant temperature drops below 100 degree F (38 degree C) before removing the cylinder head.
- When handling a metal gasket, take care not to fold it or damage the contact surface.

NOTE: Use new O-rings and gaskets when reassembling.

Removal
Engine Removal is not required for this procedure.

WARNING: Make sure jacks and safety stands are placed properly and hoist brackets are attached to the correct positions on the engine.

CAUTION:
- Use fender covers to avoid damaging painted surfaces.
- To avoid damage, unplug the wiring connectors carefully while holding the connector portion.
- To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 100 degree F (38 degree C) before loosening the retaining bolts.

NOTE:
- Mark all wiring and hoses to avoid misconnection. Also, be sure that they do not contact other wiring or hoses, or interfere with other parts.
- Inspect the timing belt before removing the cylinder head.
- Turn the crankshaft pulley so that the No. 1 piston is at top dead center.

1. Turn off the manual shut-off valve.
2. To reduce fuel pressure in the lines, start the engine and run it until it stalls.
3. Disconnect the negative terminal from the battery.
4. Drain the engine coolant.
- Remove the radiator cap to speed draining.




5. Disconnect the intake air temperature (IAT) sensor connector, then remove the intake air duct and air cleaner assembly.




6. Remove the brake booster vacuum hose and vacuum hoses.




7. Remove the mounting bolt and lock bolt, then remove the power steering (P/S) pump belt and pump.

NOTE: Do not disconnect the P/S hoses.




8. Loosen the idler pulley center nut and adjusting bolt, then remove the air conditioning (A/C) compressor belt.




9. Loosen the mounting nut and lock bolt, then remove the alternator belt.
10. Remove the P/S pump bracket.




11. Remove the throttle cable by loosening the locknut, then slip the cable end out of the accelerator linkage.

NOTE:
- Take care not to bend the cable when removing it. Always replace any kinked cable with a new one.
- Adjust the throttle cable when installing.

12. Remove the engine wire harness connectors and wire harness clamps from the cylinder head and the intake manifold.
- Four fuel injector connectors
- Engine coolant temperature (ECT) sensor connector
- Radiator fan switch connector
- Coolant temperature gauge sending unit connector
- Throttle position sensor connector
- Manifold absolute pressure (MAP) sensor connector
- Primary heated oxygen sensor (primary HO2S) connector
- Secondary heated oxygen sensor (secondary HO2S) connector
- Exhaust gas recirculation (EGR) connector
- VTEC solenoid valve connector
- VTEC pressure sensor connector
- Idle air control (IAC) valve connector
- Fuel pressure sensor connector
- Fuel temperature sensor connector




13. Remove the fuel feed hose and breather hose.




14. Remove the water bypass hose and positive crankcase ventilation (PCV) hose.




15. Remove the upper radiator hose, heater hose and water bypass hose.
16. Remove the spark plug caps and distributor from the cylinder head.




17. Remove the upper bracket.

NOTE:
- Use a jack to support the engine before the upper bracket is removed.
- Make sure to place a cushion between the oil pan and the jack.




18. Remove the cylinder head cover.
19. Remove the timing belt.




20. Remove the camshaft pulley and the back cover.




21. Remove the exhaust manifold.




22. Remove the intake manifold.




23. Remove the cylinder head bolts, then remove the cylinder head.

CAUTION: To prevent warpage, unscrew the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.