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, ...

A knocking sound from the engine often triggers worst-case assumptions, but piston slap is a far more common—and usually less dangerous—culprit. It occurs when a piston lightly contacts the cylinder ...

A Redditor has revealed she used to be annoyed by her neighbor knocking on a door until she found out it was actually his "gargantuan" dog. In a viral post shared to the r/TrueOffMyChest forum, user u ...

I've got a 6 year old JBL 10" subwoofer (home theater sub, not a sub for a car) that has suddenly taken to making a constant rhythmic knocking sound, even when not in use by the receiver. The sound is ...

In a psychological horror film from Sweden, a woman is certain she hears distress signals through her apartment walls, and struggles to be believed. By Sheri Linden Senior Copy Editor/Film Critic When ...

A new clip from Channel 5’s upcoming documentary "The Titan Sub Disaster: Minute by Minute” includes audio of the eerie “knocking” sound rescuers heard in their search for the Titanic exploration ...

So I was at a stop on this back road, and as I went foward and turning right, I hit a small but fairly deep pot hole. It made a nasty sound, but I didn't think of it much as I've hit pot holes before, ...