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Installation
To install, reverse removal procedure. Coat NEW injector "O"
rings with clean engine oil. Ensure injectors rotate smoothly and
freely. If "O" ring is installed incorrectly, injector will bind.
Tighten fuel rail retaining bolts. See TORQUE SPECIFICATIONS. To
complete installation, reverse removal procedure.
Removal (1.9L, 3.0L, 3.1L, 3.4L & 3.8L)
1) Relieve fuel pressure. See
FUEL SYSTEM PRESSURE RELEASE (GASOLINE). Disconnect negative battery
cable. Remove air intake duct, if necessary. On 1.9L, disconnect
throttle cable from throttle body lever. On 3.0L, 3.1L and 3.4L,
remove intake manifold plenum and gaskets. On 3.8L, remove vacuum line
from throttle body. Remove ignition coil wires.
2) On all models, disconnect vacuum hose at fuel pressure
regulator. Disconnect and plug fuel return line at pressure regulator.
Disconnect and plug fuel inlet line at fuel rail. Disconnect harness
connectors from injectors.
3) Remove fuel rail retaining bolts. Remove fuel rail from
intake manifold using equal force on both sides of fuel rail. See
Figs. 15, 19, 20, 22 and 23. Remove injector-to-fuel rail retaining
clip, if equipped. Remove injectors from fuel rail. Remove injector
"O" rings and discard.
Installation
To install, reverse removal procedure. Coat NEW injector "O"
rings with clean engine oil. Install injector-to-fuel rail retaining
clip with open end facing injector harness connection. Position fuel
rail on intake manifold. Push down on fuel rail to seat injectors into
manifold. Tighten fuel rail retaining bolts to specification. See
TORQUE SPECIFICATIONS. To complete installation, reverse removal
procedure.
Removal (2.2L CNG - Cavalier)
Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELEASE (CNG)
. Disconnect negative battery cable. Remove CNG fuel controls
assembly. See CNG FUEL MODULE ASSEMBLY. Remove fuel rail.
Installation
To install, reverse removal procedure. Coat NEW injector "O"
rings with clean engine oil. Position injectors into fuel rail and
install retaining clips. Tighten fuel rail retaining bolts. See
TORQUE SPECIFICATIONS. To complete installation, reverse removal
procedure.
Removal (2.2L Gasoline - Cavalier & Sunfire)
1) Relieve fuel pressure. See
FUEL SYSTEM PRESSURE RELEASE (GASOLINE). Disconnect negative battery
cable. Remove air cleaner outlet resonator. Remove fuel rail bracket.
See Fig. 17. Push in on injector connector clip and disconnect harness
connectors from injectors.
2) Disconnect pressure regulator vacuum hose. Remove fuel
return line and "O" ring from pressure regulator. Disconnect and plug
fuel inlet line at fuel rail. Remove fuel rail attaching bolts and
remove fuel rail assembly. Remove injector retaining clips and remove
fuel injectors from fuel rail. Remove injector "O" rings and discard.
Installation
To install, reverse removal procedure. Coat NEW injector "O"
rings with clean engine oil. Position injectors into fuel rail and
install retaining clips. Tighten fuel rail retaining bolts. See
TORQUE SPECIFICATIONS. To complete installation, reverse removal
procedure.
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