If you think you hear your engine knocking, don’t ignore it. Noise from the engine—whether pings or thuds—usually requires attention. Late model vehicles can compensate for minor issues, but major problems and older vehicles cannot be cured by a sensor. A number of issues can cause engine knocking, some as simple as the wrong fuel or spark plugs, but the noise should never be ignored. If you hear odd engine noises, schedule an appointment as soon as you can.  You’ll reduce the chance of long term or extensive damage.