Fuel Injector: Service and Repair
Fuel Injector Removal and InstallationWARNING: When performing the following procedure, be sure to observe Precautions on Fuel System Service to reduce the risk of fire and personal injury.
Removal
1. Relieve fuel pressure.
2. Disconnect negative (-) cable at battery.
3. Remove engine cover.
4. Disconnect fuel injector connectors.
5. Disconnect fuel feed hose (4) from fuel delivery pipe (1).
6. Remove fuel delivery pipe bolts (2).
7. Remove fuel injector(s) (3).
Installation
Reverse removal procedure for installation noting the following.
- Replace injector O-ring (1) with new one using care not to damage it.
- Check if cushion (2) is scored or damaged. If it is, replace with new one.
- Apply thin coat of fuel to O-rings (1), and then install injectors (3) into delivery pipe (4) and cylinder head.
- Tighten delivery pipe bolts (5) to specified torque.
Tightening torque
Fuel delivery pipe bolt (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.