Dodge ZB 2005 Service Manual page 1322

Symptom:
*CHECKING HARD START (FUEL SYSTEM)
RESTRICTED FUEL SUPPLY LINE
FUEL PUMP INLET STRAINER PLUGGED
FUEL PUMP MODULE
FAULTY FUEL PUMP MODULE
FUEL INJECTOR(S)
FUEL CONTAMINATION
TEST
1 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.
Install a fuel pressure gauge at the engine.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Choose a conclusion that best matches your fuel pressure reading.
Below Specification
Within Specification
2 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.
Raise vehicle on hoist, and disconnect the fuel supply line at the fuel pump module.
Install special tool #6539 (5/16 ) #6631(3/8 ) fuel line adapter and the fuel pressure
gauge between the fuel supply line and the fuel pump module.
Ignition on, engine not running.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 379 KPa +/- 14 KPa (55 psi +/- 2 psi).
Is the fuel pressure within specification?
Yes → Visually and physically inspect the fuel supply lines between the
→ Go To 3
No
POSSIBLE CAUSES
ACTION
Go To 2
Go To 4
fuel tank and the fuel rail. Repair/replace as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
201
STARTING
APPLICABILITY
All
All