Cylinder Head Replace - Overhead Cam

Disassembled view of engine:

4-110 ENGINE
1. Disconnect battery ground cable, remove air cleaner and drain cooling system.
2. Remove alternator and pivot bracket from camshaft carrier housing.
3. Remove power steering pump and bracket and position aside.
4. Disconnect ignition coil electrical connectors, then remove coil.
5. Disconnect spark plug wires from distributor cap.
6. Remove throttle cable from bracket on intake manifold.
7. Disconnect accelerator cable, downshift cable and throttle valve cable from throttle body assembly.
8. Disconnect ECM connectors from throttle body assembly.
9. Disconnect vacuum brake hose from filter, then disconnect inlet and return fuel lines from flex joints.
10. Remove water pump bypass hose from intake manifold and water pump.
11. Disconnect ECM harness connectors and heater hose from intake manifold.
12. Disconnect exhaust pipe from exhaust manifold and breather hose from camshaft carrier.
13. Disconnect upper radiator hose, then disconnect engine electrical harness and wires from thermostat housing.
14. Remove timing cover and timing probe holder.
15. Loosen water pump bolts and remove timing belt.

Fig. 6:

Fig. 7 Cylinder head & camshaft carrier bolt tightening sequence:

16. Loosen camshaft carrier and cylinder head bolts a little at a time in sequence shown in Fig. 6. Camshaft carrier and cylinder head bolts should only be removed when engine is cold.
17. Remove camshaft carrier assembly.
18. Remove cylinder head, intake manifold and exhaust manifold as an assembly.
19. Remove all carbon deposits from combustion chambers and valve ports. Check cylinder head for cracks in the exhaust ports and combustion chambers. Remove water jacket plugs and clean, if necessary.
20. Reverse procedure to install. Torque cylinder head bolts a little at a time in sequence shown in Fig. 7 to 18 ft. lbs. Tighten each bolt in the proper sequence an additional 180° in 60° increments.
21. After installation is completed (with the exception of brackets that install onto carrier), start engine and let engine idle until thermostat opens. Turn engine off and torque all bolts an additional 30 to 50° in the proper sequence.