Chrysler 1997 Stratus Convertible RHD Service Manual page 859

JX
DESCRIPTION AND OPERATION (Continued)
the diaphragm and closes off the fuel return port.
System fuel pressure reflects the amount of fuel pres-
sure required to open the return port.
The pressure regulator is a mechanical device that
is NOT controlled by the PCM or engine vacuum.
PRESSURE-VACUUM FILLER CAP
The loss of any fuel or vapor out of the filler tube
neck is prevented by the use of a safety filler cap.
The cap releases only under significant pressure 10.9
to 13.45 kPa (1.58 to 1.95 psi). The vacuum release
for all gas caps is between .97 and 2.0 kPa (.14 and
.29 psi). The cap must be replaced by a similar unit
in order for the system to remain effective.
WARNING: REMOVE FUEL FILLER TUBE CAP TO
RELIEVE TANK PRESSURE BEFORE REMOVING
OR REPAIRING FUEL SYSTEM COMPONENTS.
Vehicle
JX
Nominal refill capacities are shown. A variation may
be observed from vehicle due to manufacturing
tolerance and refill procedure.
QUICK-CONNECT FITTINGS
Different types of quick-connect fittings are used to
attach various fuel system components. These are: a
single-tab type, a two-tab type or a plastic retainer ring
type. Some are equipped with safety latch clips. Refer to
the Removal/Installation section for more information.
CAUTION: The interior components (o-rings, spac-
ers) of quick-connect fitting are not serviced sepa-
rately. Do not attempt to repair damaged fittings or
fuel lines/tubes. If repair is necessary, replace the
complete fuel tube assembly.
Fuel tubes connect fuel system components with
plastic quick-connect fuel fittings. The fitting con-
tains non-serviceable O-ring seals (Fig. 4).
CAUTION: Quick-connect fittings are not serviced
separately. Do not attempt to repair damaged quick-
connect fittings or fuel tubes. Replace the complete
fuel tube/quick-connect fitting assembly.
The quick-connect fitting consists of the O-rings,
retainer and casing (Fig. 4). When the fuel tube
enters the fitting, the retainer locks the shoulder of
the nipple in place and the O-rings seal the tube.
ROLLOVER VALVES
All vehicles have 2 rollover valves on top of the
fuel tank. The valves prevent fuel flow through the
fuel tank vent valve hoses should the vehicle rollover.
The rollover valves on the fuel tank are not ser-
viceable.
Liters U.S.
Gallons
60.0 16.0
DIAGNOSIS AND TESTING
FUEL PUMP PRESSURE TEST—2.4L ENGINES
(48 psi). Check fuel system pressure at the test port
on the fuel rail.
rail.
port (Fig. 5).
CAUTION: When using the ASD Fuel System Test,
the ASD relay and fuel pump relay remain energized
for 7 minutes or until the test is stopped, or until
the ignition switch is turned to the Off position.
RETAINER "EAR"
Fig. 4 Plastic Quick-Connect Fittings
The fuel system operates at approximately 338 kPa
(1) Remove cap from fuel pressure test port on fuel
(2) Connect Fuel Pressure Gauge C-4799B to test
Fig. 5 Checking Fuel Pressure at Intake Manifold
CASING WINDOW WINDOW RETAINER TAB O RINGS
FUEL SYSTEM
NIPPLE
14 - 5