Removal - 3.5L - Chrysler 300M Service Manual

14 - 24 FUEL INJECTION
FUEL INJECTOR (Continued)
Fig. 7 Fuel Injector - Typical
Fig. 8 Fuel Injector Location—Typical
1 - FUEL INJECTORS
2 - IGNITION COILS
combustion chamber. Fuel injectors are not inter-
changeable between engines.
The PCM provides battery voltage to each injector
through the ASD relay. Injector operation is con-
trolled by a ground path provided for each injector by
the PCM. Injector on-time (pulse-width) is variable,
and is determined by the PCM processing all the
data previously discussed to obtain the optimum
injector pulse width for each operating condition. The
pulse width is controlled by the duration of the
ground path provided.
Fig. 9 FUEL INJECTOR - TYPICAL
1 - FUEL INJECTOR
2 - NOZZLE
3 - TOP (FUEL ENTRY)
REMOVAL
REMOVAL - 2.7L
(1) Release fuel system pressure. Refer to Fuel
System Pressure Release Procedure in this section.
(2) Disconnect negative cable to battery.
(3) Remove intake manifold plenum. Refer to the
Engine section for information.
(4) Remove intake manifold plenum mounting
bolts. Lift Plenum up off of engine. Cover intake
manifold to prevent foreign material from entering
engine.
(5) Disconnect fuel supply tube quick connect fit-
tings at the rear of intake manifold. Refer to Quick
Connect Fittings in the Fuel Delivery Section.
(6) If the injector connectors are not tagged with
their cylinder number, tag them to identify the cor-
rect cylinder
(7) Remove electrical connectors from the fuel
injectors.
(8) Remove fuel rail mounting bolts.
(9) Lift fuel rail straight up off of the cylinder
head.
(10) Remove retaining clips from fuel injectors at
fuel rail.
(11) Remove fuel injectors.
(12) Repeat for remaining injectors.
(13) Check injector O-ring for damage. If O-ring is
damaged, it must be replaced. Replace the injector
clip if it is damaged.

REMOVAL - 3.5L

(1) Release fuel system pressure. Refer to Fuel
System Pressure Release Procedure in this section.
(2) Disconnect the negative battery cable.
LH