Removal Procedure
Notice: Use care in removing the fuel injectors in order to prevent damage to
the fuel injector electrical connector pins or the fuel injector nozzles.
Do not immerse the fuel injector in any type of cleaner. The fuel injector
is an electrical component and may be damaged by this cleaning method.
Important:
• | The fuel injector o-rings can be serviced seperate from the fuel
injectors. |
• | If the fuel injectors are found to be leaking, inspect the engine
oil for fuel contamination. |
- Relieve fuel system pressure.
Refer to
Fuel Pressure Relief
.
- Remove the upper intake manifold. Refer to
Intake Manifold Replacement
in Engine Mechanical.
- Remove the fuel rail. Refer to
Fuel Injection Fuel Rail Assembly Replacement
.
- Remove the fuel injector retaining clips (2).
- Remove the fuel injectors (3).
- Remove the fuel injector Upper O-ring (1).
- Remove the fuel injector lower O-ring (5).
- Remove the fuel injector lower O-ring Backup (4).
Installation Procedure
Important: Important each fuel injector is calibrated for a specific flow rate.
Be sure to use the correct part number when ordering replacement fuel injectors.
When replacing the fuel injector O-rings, be sure to install the brown
O-ring in the lower position. The fuel injector lower O-ring uses
a nylon collar, called the O-ring backup, to properly position
the O-ring on the fuel injector. Be sure to Install the O-ring
backup, or the sealing O-ring may move on the fuel injector when
installing the fuel rail. If the sealing O-ring is not
seated properly, a vacuum leak is possible and driveability complaints
may occur.
- Install the fuel injector
Upper O-ring (1).
- Install the fuel injector lower O-ring Backup (4).
- Install the fuel injector lower O-ring (5).
- Install the fuel injector (3) to fuel rail.
- Install the fuel injector retaining clips (2).
- Install the fuel rail. Refer to
Fuel Injection Fuel Rail Assembly Replacement
.
- Install the upper intake manifold. Refer to
Intake Manifold Replacement
in Engine Mechanical .
- Tighten the fuel filler cap.
- Reconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine
Electrical.
- Inspect for fuel leaks using the following procedure:
10.1. | Turn ON the ignition, for 2 seconds. |
10.2. | Turn OFF the ignition, for 10 seconds. |
10.3. | Turn ON the ignition. |
10.4. | Inspect for fuel leaks. |