2.4 and 2.9 liter engine cylinder heads

The process of removing the cylinder heads is presented for the engine installed in the car.

Oil pressure sensor

The oil pressure sensor is located on the left front side of the cylinder block.

Front Airflow Sensor Connector

Location of coolant temperature sensor

Idle speed valve connector

Ignition distributor connector

Fuel Temperature Sensor Connector

Supply hoses (A) and return (IN) fuel

Withdrawal

1. Remove ground wire from battery.


2. Drain the coolant from the cooling system.

3. Disconnect upper radiator hose and heater hose from thermostat housing.

4. Disconnect the air hoses from the throttle body.



5. Remove the two connectors from the air flow sensors (arrows indicate vacuum fittings).



6. Remove crankcase breather hose (indicated by an arrow) from the oil filler neck.

7. Remove the air filter housing with hoses and air flow sensors.

8. Disconnect hoses from expansion tank.

9. Disconnect electrical wires from the following items:

• generator (when removing the left head);
• coolant temperature sensor;
• idle speed valve;
• throttle position potentiometer;
• ignition distributor;
• fuel temperature sensor;
• fuel injectors.

10. Relieve pressure in the fuel line (pressing the pressure relief valve) and disconnect the fuel lines.




11. Disconnect the vacuum hoses from the fuel pressure regulator, throttle body, and T-piece.



12. Remove the crankcase ventilation hose from the head cover (the arrow indicates the hose valve).

13. Unscrew the plenum chamber and move it to the side together with the accelerator cable.

14. Remove the high voltage wires from the spark plugs and remove the distributor cap along with the wires.

15. By turning the crankshaft by the central bolt of the vibration damper, set the piston of cylinder 1 to the ignition point (12°before TDC) and remove the ignition distributor.

16. To remove the right head, remove the drive belt, alternator and power steering pump and attach to the body with soft wire.


17. Remove the cylinder head cover.



18. Unscrew the bolts and remove the rocker shaft.

19. Remove the pushers and arrange them in a manner that ensures their re-installation in their places.

20. Remove intake manifold with fuel line and injectors.

21. Disconnect the exhaust pipes from the exhaust manifolds.

22. Disconnect the ground strap from the rear left side of the head.

23. Unscrew the spark plugs.

24. Gradually and sequentially unscrew the cylinder head bolts in the reverse order to screwing them in.

25. Remove the cylinder head.

26. Remove the cylinder head gasket.

Installation

Intake manifold tightening sequence

Installation is carried out in the reverse order of removal, with the following points to be taken into account:

• replace the cylinder head bolts with new ones;
• install only a new cylinder head gasket;
• apply sealant to the mating surfaces of the intake manifold and heads and tighten the intake manifold mounting bolts in a certain sequence;
• warm up the engine to operating temperature and check the ignition timing;
• Tighten the intake manifold mounting bolts in sequence.