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 ...

My 2015 Suzuki Swift Sport has a recommended 95RON fuel rating. I’ve only put 95 or 98RON in it since I’ve had it and over the past year, it has been pinging like crazy. I’ve changed the spark plugs, ...