Concord Auto Repair

The rhythmic, metallic knocking sound emanating from your engine can be disconcerting, hinting at underlying issues that demand attention. Engine knock, also known as detonation or spark knock, occurs when the air-fuel mixture ignites prematurely in the combustion chamber. This untimely ignition creates a shockwave, resulting in the distinctive knocking noise. Recognizing engine knock is crucial, as it often indicates a problem that, if left unaddressed, can lead to severe engine damage. It's essential to differentiate between normal engine noises and abnormal knocks. If the sound resembles a metallic rap or ping, particularly when you step on the gas, it's likely engine knock.  Common Causes of Engine Knock Several factors can contribute to engine knock, rang ... read more