Chrysler 300M 2002 Service Manual page 2727

DRIVEABILITY - NGC
*CHECKING HARD START (FUEL DELIVERY SYSTEM) —
TEST
5 Note: The fuel pressure must be within specification before continuing.
Turn the ignition off.
WARNING: The fuel system is under a constant pressure even with the
engine off. Before testing or servicing any fuel system hose, fitting or line,
the fuel system pressure must be released.
Disconnect the fuel supply line at the fuel rail.
Connect fuel line adapter #6539(5/16 ) to the disconnected fuel supply line. Insert the
other end of the adapter into a graduated container.
Caution: Do not operate the fuel pump for more than 7 seconds in the next
step. Fuel pump module reservoir may run empty and damage to the fuel
pump will result.
Note: Specification: A good fuel pump will deliver at least 1/4 liter (1/2 pint)
of fuel in 7 seconds.
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test for 7 seconds.
Is the fuel pump capacity within specification?
Yes → Check the fuel for contaminants.
→ Check for a kinked/damaged fuel supply line between the fuel
No
Caution: Stop All Actuations.
6 Turn the ignition off.
WARNING: The fuel system is under a constant pressure even with the
engine off. Before testing or servicing any fuel system hose, fitting or line,
the fuel system pressure must be released.
Disconnect the fuel supply line from the fuel rail.
Install special 5/16 fuel line adapter tool #6539 between disconnected fuel supply
line and the fuel rail.
Attach a fuel pressure test gauge to the T fitting on tool #6539.
Start the engine and allow the fuel system to reach maximum pressure.
Turn the ignition off.
NOTE: Be certain that the clamping technique used is adequate to provide
a good seal and will not damage the fuel pressure adapter tool hose.
Using the hose clamp pliers special tool #C-4390, slowly clamp off the rubber hose on
the Fuel Pressure adapter nearest the fuel rail.
Turn the ignition off.
Monitor the fuel pressure gauge for a minimum of 5 minutes.
NOTE: The pressure should not fall below 241 KPa (35 psi)
Is the fuel pressure within specification?
Yes → Replace the leaking injector(s)
→ Replace the fuel pump module.
No
Caution: Stop All Actuations.
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 2.
tank and fuel rail. If OK, replace the fuel pump module.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
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Continued
APPLICABILITY
All
All