Engine knock is the sharp, metallic sound that cuts through the hum of a healthy engine. At its core, engine knock is a problem of timing. In a knocking engine, parts of the air-fuel mixture don't ...

Engine knocking, or detonation, occurs when fuel in the cylinders ignites unevenly, causing metallic pinging sounds, reduced power, and potential engine damage. Key causes include low-octane fuel, ...

If you hear a knocking sound from the bowels of your engine, it could be rod knock, but what exactly is it, and just how catasrophic can it be?

Add Yahoo as a preferred source to see more of our stories on Google. Your engine can make a lot of weird noises, depending on what has gone or is about to go fully kaput. If it's a rhythmic pinging ...