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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Trouble Shooting - No Codes >> Symptoms (Diesel) >> Fuel Knock/Combustion Noise >> Symptom Definition

Symptom Definition

A mild to severe ping, usually worse under acceleration. Engine makes sharp metallic knocks that change with throttle opening.