YES! Automotive in Houston can understand why our customers in the greater Harris County area would wonder if the presence of a knocking, or pinging sound, coming from their vehicles' engines should be of concern. YES! Automotive in Houston tells our customers that the presence of an occasional engine knocking or pinging noise will not necessarily be harmful to the engine. Additionally, when a pinging or knocking noise from the engine can be heard, it does not indicate a switch should be made to gasoline with a higher octane level. But if the pinging or knocking in the engine becomes persistent or heavy, that knocking sound could be the indication of a more serious car engine problem and to avoid any damage we suggest our customers bring their vehicle to YES! Automotive in Houston and let a member of our skilled auto repair mechanic team inspect the engine knocking to avoid any potential to the vehicle's engine. Of course YES! Automotive in Houston invites you to schedule online.