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Symptom:
*CHECKING HARD START (FUEL DELIVERY SYSTEM)
RESTRICTED FUEL SUPPLY LINE
FUEL PUMP MODULE
FUEL PUMP INLET STRAINER PLUGGED
FUEL INJECTOR(S)
FUEL PUMP MODULE
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 gauge.
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 400 KPa +/- 34 KPa (58 psi +/- 5 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 5/16 fuel line adapter tool #6539 between the disconnected fuel line
and the fuel pump module.
Attach a fuel pressure test gauge to the T fitting on the tool #6539
Turn the ignition on.
With the DRBIII , actuate the ASD Fuel System test and observe the fuel pressure
gauge.
NOTE: Fuel pressure specification is 400 KPa +/- 34 KPa (58 psi +/- 5 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. If no
problem is found replace the fuel filter.
Perform POWERTRAIN VERIFICATION TEST VER - 2 - NGC.
313
STARTING
APPLICABILITY
All
All
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