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Home >> Mazda >> 2018 >> CX-5 Touring, FWD >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting - Engine Control >> NO. 20 Fuel Odor (In Engine Compartment) >> Diagnostic Procedure

Diagnostic Procedure

NO. 20 FUEL ODOR IN ENGINE COMPARTMENT (SKYACTIV-G 2.5 - WITH CYLINDER DEACTIVATION) DIAGNOSTIC PROCEDURE

STEP INSPECTION RESULTS ACTION
1 INSPECT FOR MISSING OR LOOSE FUEL FILLER CAP
  • Visually inspect if the fuel filler cap is missing or loose.
  • Is there any malfunction?
Yes Repair or replace the fuel filler cap.
No Go to the next step.
2 INSPECT VACUUM HOSE CONNECTION
  • Inspect the vacuum hose between the fuel tank, charcoal canister, purge solenoid valve, and the intake manifold. (See Emission System Location Index .)
  • Is there disconnection in the vacuum hose or damage?
Yes Repair or replace the malfunctioning part according to the inspection results.
No Go to the next step.
3 INSPECT FUEL SYSTEM FOR FUEL LEAKAGE
  • Visually inspect the fuel leakage at the fuel line.
  • Is there any leakage?
Yes Repair or replace the malfunctioning part according to the inspection results.
No Go to the next step.
4 INSPECT PURGE SOLENOID VALVE Yes Go to the next step.
No Replace the purge solenoid valve.
(See Purge Solenoid Valve Removal/Installation .)
5 INSPECT CHARCOAL CANISTER Yes Repair or replace the malfunctioning part according to the inspection results.
(See Charcoal Canister Removal/Installation .)
No Remove the fuel injector and visually inspect fuel injector or leakage.
(See Fuel Injector Removal/Installation .)
6 Verify the test results.
  • If normal, return to the diagnostic index to service any additional symptoms. (See Symptom Diagnostic Index .)
  • If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.
    • If the vehicle is repaired, troubleshooting is completed.
      • If the vehicle is not repaired or additional diagnostic information is not available, reprogram the PCM if a later calibration is available. Retest.