Fuel Injector: Service and Repair
Fuel Injector Removal and InstallationWARNING: When performing following procedure, be sure to observe Precautions for Fuel System Service to reduce the risk of fire and personal injury.
Removal
1. Relieve fuel pressure.
2. Disconnect negative (-) cable from battery.
3. Disconnect fuel injector connectors.
4. Disconnect fuel feed hose from fuel delivery pipe (1).
5. Remove fuel delivery pipe (1).
6. Remove fuel injector(s) (2).
Installation
Reverse removal procedure for installation noting the following.
- Replace injector O-ring (1) and cushion (2) with new one using care not to damage it.
- Apply thin coat of fuel to O-rings (1), and then install injectors (3) into delivery pipe (4) and cylinder head.
- Tighten delivery pipe nuts (5) to specified torque.
Tightening torque
Fuel delivery pipe nut (a): 25 N.m (2.5 kg-m, 18.5 lbf-ft)
- Make sure that injectors (1) rotate smoothly (2). If not, probable cause is incorrect installation of O-ring (3). Replace O-ring with new one.
- After installation, with engine stationary and ignition switch in ON position, check for fuel leaks around fuel line connection.