Cylinder Head Removal and Installation

NOTE:
Use fender covers to avoid damaging painted surfaces.
To avoid damaging the wires and terminals, unplug the wiring connectors carefully while holding the connector portion.
Connect the HDS to the DLC, and monitor ECT SENSOR 1. To avoid damaging the cylinder head, wait until the engine coolant temperature drops below 100 °F (38 °C) before loosening the cylinder head bolts.
Mark all wirings and hoses to avoid misconnection. Also, be sure that they do not contact any other wirings or hoses, or interfere with any other parts.

1. Fuel Pressure - Relieve

Relieve the fuel pressure.

2. Battery Terminal - Disconnect

Do the battery terminal disconnection procedure.

3. Engine Coolant - Drain

Drain the engine coolant.

4. Ignition Coil - Remove

Remove the six ignition coils.

5. Alternator - Remove

Remove the alternator.

6. Intake Manifold - Remove

Remove the intake manifold.

7. Engine Wire Harness Connector - Disconnect

M/T
1.
Disconnect the following engine wire harness connectors:
Six injector connectors
Knock sensor 1 (Bank 1) connector
Knock sensor 2 (Bank 2) connector
ECT sensor 1 connector
EGR valve connector
Rocker arm oil control solenoid (Bank 1) connector
Rocker arm oil control solenoid (Bank 2) connector
Rocker arm oil pressure switch (Bank 1) connector
Rocker arm oil pressure switch (Bank 2) connector
Two A/F sensor connectors
Secondary HO2S connector
2.
Remove the wire harness clamps from the cylinder head.


A/T
1.
Disconnect the following engine wire harness connectors:
Six injector connectors
Knock sensor 1 (Bank 1) connector
Knock sensor 2 (Bank 2) connector
ECT sensor 1 connector
EGR valve connector
Rocker arm oil pressure sensor connector
Rocker arm oil control solenoid A (Bank 1) connector
Rocker arm oil control solenoid A (Bank 2) connector
Rocker arm oil control solenoid B (Bank 1) connector
Rocker arm oil pressure switch A (Bank 1) connector
Rocker arm oil pressure switch A (Bank 2) connector
Rocker arm oil pressure switch B (Bank 1) connector
Two A/F sensor connectors
Secondary HO2S connector
2.
Remove the wire harness clamps from the cylinder head.

8. Front and Rear Warm Up TWC - Remove

Remove the front and rear warm up TWC.

10. Cylinder Head Peripheral - Remove
1.
Remove the connector bracket (A) from the front cylinder head.
2.
Remove the EVAP canister purge joint (A).
3.
Remove the EVAP canister purge joint bracket.
4.
Remove the harness bracket (A) from the rear cylinder head.

11. Injector Base - Remove

Remove the injector bases.

12. Water Passage - Remove

Remove the water passage.

13. Timing Belt - Remove

Remove the timing belt.

14. Cylinder Head Cover - Remove

Remove the cylinder head covers.

15. Camshaft Pulley and Back Cover - Remove

FRONT

REAR
1.
Remove the camshaft pulley (A) and the back cover (B).
2.
Front: Disconnect the CMP sensor connector (C).

16. Cylinder Head - Remove

FRONT

REAR (M/T)

REAR (A/T)
1.
Remove the cylinder head bolts. To prevent warpage, loosen the bolts in sequence 1/3 turn at a time; repeat the sequence until all bolts are loosened.
2.
Remove the cylinder heads.

1. Cylinder Head - Install
1.
Clean the cylinder head and the engine block surface.
2.
Clean and install the oil control orifices (A) with new O-rings (B).
3.
Install a cooling control spacers (C) in the engine block whenever the engine block is replaced, and check for free play between the cooling control spacer and the engine block. If there is any free play, install a new cooling control spacer.
NOTE:
Make sure the cooling control spacer contacts the bottom of the water jacket (D).
The cooling control spacer upper end portions (E) and the clearance of the cylinder block end face (F) being more than 1.5 mm (0.059 in).
4.
Install the dowel pins (G) and the new cylinder head gaskets (H).
5.
Clean the timing belt pulleys, the timing belt guide plate, and the upper and lower covers.
6.
Set the timing belt drive pulley to top dead center (TDC) by aligning the TDC mark (A) on the tooth of the timing belt drive pulley with the pointer (B) on the oil pump.
7.
Install the cylinder heads on the engine block.
8.
Measure the diameter of each cylinder head bolt at point A and point B.
9.
If either diameter is less than 11.3 mm (0.445 in), replace the cylinder head bolt.
10.
Apply new engine oil to the threads and under the bolt heads of all cylinder head bolts.




FRONT

REAR (M/T)

REAR (A/T)
11.
Torque the cylinder head bolts in sequence to 30 N·m (3.1 kgf·m, 22 lbf·ft), using a beam-type torque wrench. When using a preset click-type torque wrench, be sure to tighten slowly and do not overtighten. If a bolt makes any noise while you are torquing it, loosen the bolt and retighten it from the first step.
NOTE: Be sure to install the 188 mm long head bolt (A) in the location shown.
12.
After torquing, tighten all cylinder head bolts in two steps (90 ° per step) using the sequence shown in step 11. If you are using a new cylinder head bolt, tighten the bolt an extra 90 °.
NOTE: Remove the cylinder head bolt if you tightened it beyond the specified angle, and go back to step 8 of the procedure. Do not loosen it back to the specified angle.

2. Camshaft Pulley and Back Cover - Install

FRONT

REAR
1.
Front: Connect the CMP sensor connector (A).
2.
Apply new engine oil to the threads of the camshaft pulley mounting bolt (B).
3.
Install the back cover (C) and the camshaft pulley (D).




FRONT

REAR
4.
Set the camshaft pulleys to TDC by aligning the TDC marks (A) on the camshaft pulleys with the pointers (B) on the back covers.

3. Timing Belt - Install

Install the timing belt.

4. Valve Clearance - Adjust

Adjust the valve clearance.

5. Cylinder Head Cover - Install

Install the cylinder head covers.

6. Water Passage - Install

Install the water passage.

7. Injector Base - Install

Install the injector bases.

8. Cylinder Head Peripheral - Install
1.
Install the connector bracket (A) to the front cylinder head.
2.
Install the harness bracket (A) to the rear cylinder head.
3.
Install the EVAP canister purge joint bracket.
4.
Install the EVAP canister purge joint (A).

10. Front and Rear Warm Up TWC - Install

Install the front and rear warm up TWC.

11. Engine Wire Harness Connector - Connect

M/T
1.
Connect the following engine wire harness connectors:
Six injector connectors
Knock sensor 1 (Bank 1) connector
Knock sensor 2 (Bank 2) connector
ECT sensor 1 connector
EGR valve connector
Rocker arm oil control solenoid (Bank 1) connector
Rocker arm oil control solenoid (Bank 2) connector
Rocker arm oil pressure switch (Bank 1) connector
Rocker arm oil pressure switch (Bank 2) connector
Two A/F sensor connectors
Secondary HO2S connector
2.
Install the wire harness clamps to the cylinder head.


A/T
1.
Connect the following engine wire harness connectors:
Six injector connectors
Knock sensor 1 (Bank 1) connector
Knock sensor 2 (Bank 2) connector
ECT sensor 1 connector
EGR valve connector
Rocker arm oil pressure sensor connector
Rocker arm oil control solenoid A (Bank 1) connector
Rocker arm oil control solenoid A (Bank 2) connector
Rocker arm oil control solenoid B (Bank 1) connector
Rocker arm oil pressure switch A (Bank 1) connector
Rocker arm oil pressure switch A (Bank 2) connector
Rocker arm oil pressure switch B (Bank 1) connector
Two A/F sensor connectors
Secondary HO2S connector
2.
Install the wire harness clamps to the cylinder head.

12. Intake Manifold - Install

Install the intake manifold.

13. Alternator - Install

Install the alternator.

14. Ignition Coil - Install

Install the six ignition coils.

15. Battery Terminal - Connect

Do the battery terminal reconnection procedure.

16. After Installation - Check

After installation, check that all tubes, hoses, and connectors are installed correctly.

17. Fuel Leak - Inspect

Press the engine start/stop button to select the ON mode, but do not operate the starter. After the fuel pump runs for about 2 seconds, the fuel rail will be pressurized. Repeat this two or three times, then check for fuel leakage.

19. PCM Idle - Learn

Do the PCM idle learn procedure.

21. Idle Speed - Inspect

Inspect the idle speed.

22. Ignition Timing - Inspect

Inspect the ignition timing.

23. Maintenance Minder - Reset (With Maintenance Minder System)

If the Maintenance Minder required to replace the timing belt, reset the Maintenance Minder with the gauge (see "Resetting the Maintenance Minder").