A rod knock is a knocking noise that you'll hear coming from the engine of a car with a damaged connecting rod. The knock will usually get worse as the engine speed increases. It's caused by the connecting rod hitting against the side of the engine block.
If you have a rod knock, you'll likely notice other symptoms as well, such as:
- Reduced power and torque from the engine
- Increased fuel consumption
- Rough idling
- Knocking noises when accelerating or decelerating
If you think you might have a rod knock, it's important to get it checked out by a mechanic as soon as possible. If left untreated, it can cause serious damage to your engine.