Engine knock is the sharp, metallic sound that cuts through the hum of a healthy engine. At its core, engine knock is a problem of timing. In a knocking engine, parts of the air-fuel mixture don't ...

Engine knock is not a single problem — there are at least four distinct types, each with a different cause and a different level of urgency. The pinging sound that appears only under hard acceleration ...

Hello Paul, my car has started making a loud knocking noise from the engine, especially when accelerating uphill. It was not there before. I worry it could damage the engine if I continue driving.

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 ...