J2000/Sunbird V6-191 3.1L VIN T MFI (1994)
Air Plenum And Fuel Rail Removal
REMOVAL:
1.
Disconnect the negative battery cable.
2.
Relieve the fuel system pressure, see FUEL SYSTEM PRESSURE RELIEF.
3.
Remove the intake manifold plenum, see INTAKE MANIFOLD PLENUM.
4.
Remove the fuel line bracket bolt.
5.
Remove the fuel lines at the fuel rail. Use a back-up wrench on the fuel fittings to prevent them from turning.
6.
Remove the fuel inlet and return line O-rings and discard.
7.
Disconnect the vacuum line at the pressure regulator.
8.
Remove the fuel rail retaining bolts.
CAUTION: Use care in removing the fuel rail assembly, to prevent damage to the injector spray tips, and the injector electrical connector
terminals. When removed, support the rail to prevent damage to its components. The fuel injector is serviced as a complete assembly only. Since it
is an electrical component, it should not be immersed in any liquid cleaner.
9.
Remove the injector O-ring from the tip of each injector, and discard.
INSTALLATION:
1.
Lubricate the O-ring seals with clean engine oil, and install one on the tip of each injector.
2.
Install the fuel rail assembly in the intake manifold. Tilt the fuel rail assembly in the intake manifold. Tilt rail to install the injectors.
3.
Install the fuel rail mounting bolts, and tighten to 10 N-m (88 lb. in.).
4.
Connect the fuel injector electrical connectors.
5.
Put new O-rings on the fuel lines.
6.
Attach the fuel feed and return line and tighten to 23 N-m (17 lb. ft.). Use a back-up wrench on the fuel fittings to prevent them from turning.
7.
Check for fuel leaks:
a.
Temporarily connect the negative battery cable.
b.
With the engine "OFF" and the ignition "ON," check for fuel leaks.
c.
Disconnect the negative battery cable.
8.
Install the intake manifold plenum.
