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.

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 ...

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 ...