Fuel Injector: Service and Repair

COMPONENTS

REMOVAL

1. REMOVE THROTTLE BODY

2. DISCONNECT ENGINE WIRE




a. Disconnect these connectors:
1. 4 injector connectors
2. Crankshaft position sensor connector
3. knock sensor connector
4. Camshaft position sensor

b. Disconnect the DLC1 and wire clamp from the brackets.




3. REMOVE DELIVERY PIPE AND INJECTORS
a. Disconnect the vacuum sensing hose from the fuel pressure regulator.
b. Disconnect the fuel return hose from the fuel pressure regulator.
c. Remove the union bolt and 2 gaskets, and disconnect the fuel inlet pipe from the delivery pipe.

HINT:
- Put a suitable container or shop rag under the delivery pipe.
- Slowly loosen the union bolt.

d. Remove the 2 bolts and delivery pipe together with the 4 injectors.

NOTE: Be careful not to drop the injectors when removing the delivery pipe.

e. Remove the 4 insulators from the 4 spacers.
f. Pull out the 4 injectors from the delivery pipe.
g. Remove the O-ring and grommet from each injector.

INSTALLATION

1. INSTALL INJECTORS TO DELIVERY PIPE




a. Install a new grommet to the injector.
b. Apply a light coat of gasoline to a new O-ring and install it to the injector.




c. While turning the injector left and right, install it to the delivery pipe. Install the 4 injectors.
d. Position the injector connector upward.

2. INSTALL INJECTORS AND DELIVERY PIPE




a. Place the 4 new insulators and in position on the spacers.
b. Place the 4 injectors together with the delivery pipe in position on the cylinder head.
c. Temporarily install the 2 bolts holding the delivery pipe to the cylinder head.
d. Check that the injectors rotate smoothly.

HINT: If injectors do not rotate smoothly, the probable cause is incorrect installation of O-rings. Replace the O-rings.




e. Position the injector connector upward.
f. Tighten the 2 bolts holding the delivery pipe to the cylinder head.

Torque: 21 Nm (210 kg.cm, 15 ft.lb)

g. Connect the fuel inlet pipe to the delivery pipe with 2 new gaskets and the union bolt.

Torque: 29 Nm (300 kg.cm, 22 ft.lb)

h. Connect the fuel return hose to the fuel pressure regulator.
i. Connect the vacuum sensing hose to the fuel pressure regulator.

3. CONNECT ENGINE WIRE

4. INSTALL THROTTLE BODY