Add Yahoo as a preferred source to see more of our stories on Google. 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 ...

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?

Knock sensors are devices used in internal combustion engines to detect engine knock or detonation. The knock sensor detects vibrations and sends a signal to the engine control module (ECM), to ...