What causes engine knocking (and how can you prevent it)

Engine knocking can be an annoying issue to deal with, and it can even cause damage to your car. Here's why it might happen, and how you can prevent it.
New York Post

Eerie ‘knocking’ sounds from Titan sub that gave rescuers hope heard in new audio

The mysterious knocking sounds heard beneath the Atlantic Ocean that gave false hope that the Titan submersible and its occupants could be rescued has been revealed in a haunting new audio clip. After ...
IFLScience

Chinese Astronaut Says He Heard A Strange Knocking Sound While In Space

A Chinese astronaut has reported hearing a strange “knocking” sound in space – and no one is quite sure what it is. The rest of this article is behind a paywall. Please sign in or subscribe to access ...
Honest John on MSN

Ask Honest John - Why is my engine making a knocking sound when cold?

I have a SEAT Leon 2015. When cold there is a knocking noise coming from the engine. It sounds like it is in the area in ...
Forbes

Banging Sound From Titan Sub Search Heard For First Time In New Documentary Clip

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 ...
Ars Technica

Subwoofer making a constant knocking sound when not in use

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 ...
The Daily Dot

‘Sounds like a brand new GM truck engine’: Mechanic reveals the engine noise you never want to hear—especially in a Hyundai or Kia. Then he reveals what you can do about it

If your Kia or Hyundai engine just started making a loud knocking sound, don’t panic. You might be eligible for a free engine replacement due to a massive engine recall. Featured Video A viral TikTok ...