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Home >> Mazda >> 2006 >> MPV ES >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System AJ) >> No. 13 Knocking/Pinging-Acceleration/Cruise >> Notes
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No. 13 Knocking/Pinging-Acceleration/Cruise: Notes

KNOCKING/PINGING-ACCELERATION/CRUISE POSSIBLE CAUSE DESCRIPTION

13 Knocking/pinging-acceleration/cruise.
DESCRIPTION 
  • Sound is produced when air/fuel mixture is ignited by something other than spark plug (e.g. hot spot in combustion chamber).
POSSIBLE CAUSE 
  • Engine overheating due to cooling system malfunction.
  • ECT sensor malfunction.
  • IAT sensor malfunction.
  • Inadequate engine compression.
  • Inadequate fuel pressure.
  • Knock sensor and related circuit malfunction.
    WARNING:
    • The following troubleshooting flow chart contains the fuel system diagnosis and repair procedures. Read the following warnings before performing the fuel system services:
      • 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 REPAIR PROCEDURE" and "AFTER REPAIR PROCEDURE" described in this file. (See BEFORE REPAIR PROCEDURE .) (See AFTER REPAIR PROCEDURE .)
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