NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) (MZI-3.7) DETECTION CONDITIONS AND
POSSIBLE CAUSES
DIAGNOSTIC PROCEDURE
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT) (MZI-3.7) DIAGNOSTIC PROCEDURE
20
FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION
Gasoline fuel smell or visible leakage
POSSIBLE
CAUSE
z
Excessive fuel pressure
z
Purge solenoid valve malfunction
z
Fuel tank vent system blockage
z
Charcoal canister malfunction
z
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:
z
Fuel vapor is hazardous. It can easily ignite, causing serious injury
and damage. Always keep sparks and flames away from fuel.
z
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:
z
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.
STEP
INSPECTION
RESULTS
ACTION
1
Visually inspect for fuel leakage at fuel
injector O-ring and fuel line.
Service if necessary.
Install the fuel pressure gauge between the
fuel pipe and the fuel distributor.
Start engine and idle it.
Measure fuel line pressure during idle.
Is fuel line pressure correct during idle?
Yes
Go to the next step.
No
Replace the fuel pump unit.
(See
FUEL PUMP UNIT
REMOVAL/INSTALLATION [MZI-
3.7]
.)
2008 Mazda CX-9 Grand Touring
2008 ENGINE Symptom Troubleshooting (MZI-3.7) - Mazda CX-9
Microsoft
Sunday, November 15, 2009 10:10:05 AM
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© 2005 Mitchell Repair Information Company, LLC.
