NO.27 FUEL REFILL CONCERNS [MZI-3.5]
DESCRIPTION AND POSSIBLE CAUSES
Is fuel line pressure correct at idle?
(see
FUEL LINE PRESSURE
INSPECTION [MZI-3.5]
.)
Inspect fuel pump relay and fuel pump
circuit.
Inspect the fuel line for clogging.
If there is no malfunction, replace the
fuel pump unit.
(see
FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-
3.5]
.)
High:
Replace the fuel pump unit.
(see
FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-
3.5]
.)
5
Inspect the charcoal canister for fuel
saturation.
Is excess amount of liquid fuel present
in canister?
Yes
Replace the charcoal canister.
No
Inspect the fuel tank vent system.
If the fuel tank vent system is normal,
suggest trying a different brand since
sulphur content can vary in different
fuels.
If the fuel tank vent system is not
normal, repair or replace the
malfunctioning part.
6
z
Verify test results.
{
If normal, return to diagnostic index to service any additional symptoms.
(See
ENGINE SYMPTOM TROUBLESHOOTING [MZI-3.5]
.)
{
If malfunction remains, inspect related Service Bulletins and/or On-line Repair
Information and perform repair or diagnosis.
z
If vehicle is repaired, troubleshooting completed.
z
If vehicle is not repaired or additional diagnostic information is not
available, replace the PCM.
(see
PCM REMOVAL/INSTALLATION [MZI-3.5]
.)
27
FUEL REFILL CONCERNS
DESCRIPTION
z
Fuel tank is not filled smoothly.
z
Clogged EVAP pipes
z
Nonreturn valve malfunction
z
Improper use of fuel nozzle
2007 Mazda CX-9 Grand Touring
2007 ENGINE PERFORMANCE Symptom Troubleshooting (MZI-3.5) - CX-9
Microsoft
Sunday, November 15, 2009 9:27:38 AM
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