To fix this problem, you may need new bearings or other work done on the pistons or crankshaft - parts located deep in the engine, meaning this can be a time-intensive repair. There’s also the option of having your PC speakers work hand-in-hand with your projector built-in speaker and a wireless Bluetooth speaker so that the sound effects, dialog, and music coming from the movie you’re watching, videogame you’re playing, or presentation you’re presenting is heard loud and clear through multiple sources. As the bearings wear out, the pistons will start to rattle against the crankshaft, creating a very similar knocking sound. The rod bearings facilitate smooth piston movement, but they can become worn out or come out of position over time.

As the pistons travel up and down in the engine, they turn the crankshaft which ultimately sends power to the wheels. Rod Knock: Worn BearingsĪnother type of engine knock is rod knock. If you're driving around in a modern car with engine knock, checking the knock sensor is an important part of the diagnostic process. This naturally means that a bad knock sensor can allow the engine to knock. There's even a knock sensor that's designed to detect engine knock and tell the Engine Control Unit, so it can correct the problem automatically. Luckily, engine knock isn't a frequent problem with modern cars, because the air/fuel ratio, fuel injectors and timing are all computer controlled.

Where is the sound coming from