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HOMESERVICE MANUALSMAZDA20105 SPORT, 2.3 L, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISSYMPTOM TROUBLESHOOTING [L3] - ENGINENO. 13 KNOCKING/PINGING-ACCELERATION/CRUISENOTES
2010 Mazda 5 Sport, 2.3 L, Standard

No. 13 Knocking/Pinging-Acceleration/Cruise: Notes

2010 Mazda 5 Sport, 2.3 L, StandardSECTION Notes
SYMPTOM TROUBLESHOOTING - NO. 13 KNOCKING/PINGING-ACCELERATION/CRUISE [L3]

13 KNOCKING/PINGING - ACCELERATION/CRUISE
DESCRIPTION  Sound is heard when air/fuel mixture is ignited by something other than spark plug (such as hot spot in combustion chamber).
POSSIBLE CAUSE 
  • Engine overheating due to cooling system malfunction
  • ECT sensor malfunction
  • IAT sensor malfunction
  • MAF sensor malfunction
  • KS malfunction
  • Erratic signal from CMP sensor
  • Inadequate engine compression
  • Inadequate fuel pressure
    WARNING: The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before servicing the 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 service information.

      (See BEFORE SERVICE PRECAUTION .)

      (See AFTER SERVICE PRECAUTION .)

    RENDER: 1.0x

    NO RELATED

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    When to See a Mechanic

    Stop DIY work and contact a certified mechanic immediately if any of the following apply:

    • • You smell fuel, burning insulation, or see smoke.
    • • Brakes feel soft, pull hard to one side, or make grinding noises.
    • • The engine overheats, stalls repeatedly, or misfires under load.
    • • You are missing required tools, torque specs, or safe lifting equipment.
    • • You are not confident in the next step or safety outcome.