No.20 Fuel Odor; Compartment - Mazda 2002 6 Workshop Manual

STEP
6 Install fuel pressure gauge between fuel pipe
and fuel distributor.
Start engine and run it at idle.
Measure fuel line pressure at idle.
Is fuel line pressure correct at idle?
(See F–20 FUEL LINE PRESSURE
INSPECTION)
7 Is strong blue spark visible at each disconnected
high-tension lead while cranking engine?
8 Verify test results.
• If okay, return to diagnostic index to service any additional symptoms.
• If malfunction remains, replace PCM.
End Of Sie
NO.20 FUEL ODOR (IN ENGINE COMPARTMENT)
20 FUEL ODOR (IN ENGINE COMPARTMENT)
DESCRIPTION Gasoline fuel smell or visible leakage
• 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 performing fuel system services:
• Fuel vapor is hazardous. It can easily ignite, causing serious injury and damage. Always
POSSIBLE CAUSE
• Fuel line spills and leakage are dangerous. Fuel can ignite and cause serious injuries or
• Disconnecting/connecting quick release connector without cleaning it may possibly cause
Diagnostic procedure
STEP
1 Visually inspect for fuel leakage at fuel injector
O-ring and fuel line.
Service as necessary.
Install fuel pressure gauge between fuel pipe
and fuel distributor.
Start engine and run it at idle.
Measure fuel line pressure at idle.
Is fuel line pressure correct at idle?
(See F–20 FUEL LINE PRESSURE
INSPECTION)
2 Inspect for blockage/restriction or open between
engine vacuum port and charcoal canister.
Inspect for blockage in fuel tank vent system.
Is fault indicated?
3 Inspect purge solenoid valve.
(See F–39 PURGE SOLENOID VALVE
INSPECTION.)
Is solenoid operating properly?
F–218
TROUBLESHOOTING
INSPECTION
keep sparks and flames away from fuel.
death and damage. Fuel can also irritate skin and eyes. To prevent this, always complete
"BEFORE REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this
manual.
(See F–17 BEFORE REPAIR
(See F–17 AFTER REPAIR
Caution
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.
INSPECTION
RESULTS
Yes Go to next step.
No Zero or low:
• Inspect for clogged fuel line.
• If okay, replace fuel pump unit.
High:
• Replace fuel pump unit.
Yes Inspect spark plugs and CMP sensor.
No Inspect following:
• High-tension leads
• Ignition coil and connector
PROCEDURE.)
PROCEDURE.)
RESULTS
Yes Go to next step.
No Replace fuel pump unit.
Yes Replace vacuum hose.
No Go to next step.
Yes Go to next step.
No Replace purge solenoid valve.
ACTION
A6E398018881W22
ACTION