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Home >> Mazda >> 2012 >> CX-7 i Touring, 2.5L Eng VIN M >> Repair and Diagnosis >> Engine Performance >> System >> Symptom Troubleshooting [Engine Control System 2.5L L5] >> No.21 Engine Noise >> Notes

No.21 Engine Noise: Notes

21 ENGINE NOISE
DESCRIPTION 
  • Engine noise from under hood.
POSSIBLE CAUSE 

Squeal, click or chirp noise: 

  • Improper engine oil level
  • Improper drive belt tension
  • Generator mis-installation
  • Splash shield or under cover looseness (splashed water to drive belts)

    Rumble or grind noise: 

  • Improper drive belt tension
  • Loose parts
  • Fluid revel low or air in power steering fluid

    Rattle sound noise: 

  • Loose parts

    Hiss sound noise: 

  • Air leakage from intake air system
  • Loose spark plug
  • Vacuum leakage

    Rap or roar noise: 

  • Dynamic dumper looseness
  • Exhaust system looseness
  • Intake air system looseness

    Other noise: 

  • Tappet noise
  • Timing chain noise