The demon of engine knock is something an owner of a traditional high-performance Pontiac knows all too well. An engine designed when 102-octane high test was at almost every fuel station in the ...

Senior Editor Mike Allen answers readers' car questions. Q: I backed my truck in to a white steel post (right rear quarter panel). It didnt really dent or scratch the truck, but it left about a foot ...

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, ...

Does your street-driven car ping now when it didn't use to? It may be suffering from octane creep caused by deposit buildup inside the combustion chambers. New engines on the dyno and regularly ...

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, ...