Fuel Injector: Service and Repair

Removal




1. Relieve fuel pressure in fuel teed line referring to "Fuel Pressure Relief Procedure".
2. Remove throttle body intake collector, refer to "THROTTLE BODY REMOVAL".
3. Disconnect fuel feed hose and fuel return hose.
4. Disconnect vacuum hose and fuel return hose from fuel pressure regulator.
5. Remove fuel feed pipe and fuel connect pipe from delivery pipes (right and left).

CAUTION: A small amount of fuel may be released when it is from delivery pipe.
Place a shop cloth under delivery pipe so that released fuel is absorbed in it.

6. Disconnect connector from each injector.




7. Remove delivery pipes (right and left) from intake manifold.
8. Remove fuel injector(s).

Installation




1. Replace injector O-ring with new one using care not to damage it. Install grommet to injector.




2. Check if insulator is scored or damaged. If it is, replace with new one.
Install insulators and cushions to intake manifold.




3. Apply thin coat of fuel to O-rings and then install injectors into delivery pipes (right and left) and intake manifold.
Make sure that injectors rotate smoothly. If not, probable cause is incorrect installation of O-ring. Replace O-ring with new one.
4. Tighten delivery pipe bolts and make sure that injectors rotate smoothly.




5. Install fuel connect pipe and tighten union bolts to specified torque with new gaskets.

Tightening Torque
(b): 30 N.m (3.0 kg-m, 22.0 lb-ft)

6. Install fuel feed pipe and tighten union bolt to specified torque with new gaskets.

Tightening Torque
(a): 30 N.m (3.0 kg-m, 22.0 lb-ft)

7. Connect vacuum hose and fuel return hose to fuel pressure regulator.




8. Connect fuel feed hose and fuel return hose.
9. Connect connectors to injectors.
10. Install throttle body and intake collector, refer to "THROTTLE BODY INSTALLATION".
11. With engine "OFF" and ignition switch "ON", check for fuel leaks around fuel line connection.