![]() ![]() ![]() ![]() What Does Engine Knock Sound Like?Įngine knock typically sounds like a knock, ping, or click coming from the engine. The second ignition creates a second flame front, and when those two reactions collide, you get knock. Increased pressure means increased temperature, and in some cases, it gets so hot that it creates a second ignition. That flame front’s movement pressurizes the remaining air and fuel mixture. A few things must happen for this to occur.īasically, the spark plug ignition creates a flame front that travels through the remaining cylinder space. In other words, knock is bad news for your engine. Also known as engine ping or detonation, an engine knock is a sound and reaction that occurs when there is a second unplanned ignition or explosion within a cylinder that is separate from the regular controlled ignition from a spark plug. ![]()
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