Fuel Rail & Injectors: Installation
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
- If the fuel injector insulator cups are removed from the cylinder head while removing the fuel rail, NEW insulator cups must be installed. See Fig 1.
- Install NEW "O" rings on the fuel injectors.
- Install the fuel injectors to fuel rail.
- Install the fuel injector clips.
- Install the fuel rail using the following procedure:
- With the fuel injectors positioned downward, lower the fuel injectors into the cylinder head ports.
- Align the injectors by rotating the fuel rail forward.
- Carefully push the fuel injectors into the cylinder head ports.
- Install the fuel rail attaching studs. Tighten the fuel rail studs to specification. See TORQUE SPECIFICATIONS .
- Connect the fuel injector harness connectors. Pull back to insure the connectors are locked in place.
- Connect the fuel supply and return pipes.
- Install the fuel pressure regulator. Install the fuel pressure regulator bolt. Tighten the fuel pressure regulator bolt to specification. See TORQUE SPECIFICATIONS .
- Connect the vent pipe to the fuel pressure regulator.
- Install the air cleaner outlet resonator.
- Connect the negative battery cable. Tighten to specification. See TORQUE SPECIFICATIONS .
- Check for fuel leaks using the following procedure:
- Turn ignition switch to RUN position, with the engine OFF for 2 seconds.
- Turn ignition switch to OFF position for 10 seconds.
- Turn ignition switch to RUN position.
- Check for fuel leaks.