Fuel Injector Removal and Installation
A small amount of fuel may come out after removal of fuel injectors, cover them with shop cloth.
1) Relieve fuel pressure according to Fuel Pressure Relief Procedure:M13A .
2) Disconnect negative cable at battery.
3) Disconnect fuel injector couplers and release wire harness from clamps.
4) Remove clamp bolt (4) for fuel feed pipe and return pipe (1).
5) Remove fuel delivery pipe bolts (2).
6) Remove fuel injector(s) (3).
For installation, reverse removal procedure and note the following precautions.
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 intake manifold.
Make sure that injectors rotate smoothly (6). If not, probable cause is incorrect installation of O-ring. Replace O-ring with new one.
Tighten delivery pipe bolts (5) and make sure that injectors rotate smoothly.
Tightening torque
Delivery pipe bolt ( a ): 25 N·m ( 2.5 kg-m, 18.0 lb-ft)
After installation, with engine OFF and ignition switch ON, check for fuel leaks around fuel line connection.