Mazda CX-9 Grand Touring 2009 Manual page 1368

NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) (MZI-3.7) DETECTION CONDITIONS AND
POSSIBLE CAUSES
20 FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION Gasoline fuel smell or visible leakage
POSSIBLE
CAUSE
DIAGNOSTIC PROCEDURE
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
Visually inspect for fuel leakage at fuel
injector O-ring and fuel line.
Service if necessary.
Install the fuel pressure gauge between the
1
fuel pipe and the fuel distributor.
Start engine and idle it.
Measure fuel line pressure during idle.
Is fuel line pressure correct during idle?
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Excessive fuel pressure
Purge solenoid valve malfunction
Fuel tank vent system blockage
Charcoal canister malfunction
Fuel leakage from fuel system
WARNING:
The following troubleshooting flow chart contains fuel system diagnosis and
repair procedures. Read following warnings before servicing fuel system:
Fuel vapor is hazardous. It can easily ignite, causing serious injury
and damage. Always keep sparks and flames away from fuel.
Fuel line spills and leakage are dangerous. Fuel can ignite and cause
serious injuries or death and damage. Fuel can also irritate skin and
eyes. To prevent this, always complete "BEFORE SERVICE
PRECAUTION" and "AFTER SERVICE PRECAUTION" described in this
manual.
(See BEFORE SERVICE PRECAUTION [MZI-3.7] .)
(See AFTER SERVICE PRECAUTION [MZI-3.7] .)
CAUTION:
Disconnecting/connecting quick release connector without cleaning it
may cause damage to fuel pipe and quick release connector. Always
clean quick release connector joint area before
disconnecting/connecting, and make sure that it is free of foreign
material.
RESULTS
Yes Go to the next step.
Replace the fuel pump unit.
(See FUEL PUMP UNIT
No
REMOVAL/INSTALLATION [MZI-
ACTION
3.7] .)