Fuel Injector: Service and Repair

COMPONENTS

REMOVAL STEPS
1. High-pressure fuel hose connection

Bleed the residual pressure within the fuel pipe line so as to prevent the flow of fuel.

CAUTION: Cover the hose connection with rags to prevent splash of fuel that could be caused by some residual pressure in the fuel pipe line.

2. Fuel return hose connection
3. Vacuum hose connection
4. Fuel pressure regulator
5. Control harness connection
6. Fuel pipe
7. Fuel rail
8. Insulator
9. Injector support
10. Injector
11. Insulator
12. O-ring
13. Grommet

INSTALLATION STEPS
1. High-pressure fuel hose connection

Apply a small amount of new engine oil to the fuel pipe and high pressure fuel hose union, and then insert, being careful not to damage the O-ring.

CAUTION: Do not let the engine oil get into the fuel rail.

2. Fuel return hose connection
3. Vacuum hose connection




4. Fuel pressure regulator

1. Apply a small amount of new engine oil to a new O-ring and insert it to the fuel rail carefully.

CAUTION: Do not let the engine oil get into the fuel rail.

2. If the fuel pressure regulator does not move smoothly, the O-ring may be folded. Then, remove the regulator to check the O-ring for damage.
3. Tighten the regulator to the specified torque.
Tightening torque: 9 Nm (7 ft.lbs.)

5. Control harness connection
6. Fuel pipe
Apply a small amount of new engine oil to the fuel pipe and high pressure fuel hose union, and then insert, being careful not to damage the O-ring.

CAUTION: Do not let the engine oil get into the fuel rail.

7. Fuel rail
8. Insulator
9. Injector support




10. Injector

1. Apply a small amount of new engine oil to the O-ring.

CAUTION: Do not let the engine oil get into the fuel rail.

2. While turning the injector to the left and right, install it to the fuel rail.
3. Check to be sure that the injector turns smoothly. If it does not turn smoothly, the O-ring may be trapped, remove the injector and then reinsert it into the fuel rail and check again.

11. Insulator
12. O-ring
13. Grommet