Cylinder Head: Removal

The alloy cast iron cylinder heads (Figure ) are held in place by eight bolts. The spark plugs are located at the peak of the wedge between the valves.

1. Disconnect the battery negative cable from the battery.
2. Drain cooling system. (Refer to STANDARD PROCEDURE--DRAINING COOLING SYSTEM 3 ).
3. Remove the intake manifold-to-generator bracket support rod. Remove the generator.
4. Remove closed crankcase ventilation system.
5. Disconnect the evaporation control system.
6. Remove the air cleaner, air in-let hose and resonator.
7. Perform fuel system pressure release procedure (Refer to FUEL SYSTEM PRESSURE RELEASE ).
8. Disconnect the fuel supply line from the fuel rail (Refer to FUEL LINE DISCONNECT FITTINGS ).
9. Disconnect accelerator linkage and if so equipped, the speed control and transmission kick-down cables.
10. Remove distributor cap and wires.
11. Disconnect the coil wires.
12. Disconnect coolant temperature sending unit wire.
13. Disconnect heater hoses and bypass hose.
14. Disconnect the vacuum supply hoses from the intake manifold.
15. Disconnect the fuel injector harness and secure out of the way.
16. Remove cylinder head covers and gaskets (Refer to ENGINE/CYLINDER HEAD/CYLINDER HEAD COVER(S)-REMOVAL  ).
17. Remove intake manifold and throttle body as an assembly. Discard the flange side gaskets and the front and rear cross-over gaskets.
18. Remove exhaust manifolds (Refer to ENGINE/MANIFOLDS/EXHAUST MANIFOLD-REMOVAL  ).
19. Remove rocker arm assemblies and push rods. Identify to ensure installation in original locations.
20. Remove the head bolts from each cylinder head and remove cylinder heads. Discard the cylinder head gasket.
21. Remove spark plugs.