That rhythmic knock under the hood could mean five very different things.

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 ...

Sound coming from your engine bay is typically very normal, as it means the engine is working and providing power to help move your vehicle. Most drivers have an idea of what their vehicle should ...