Luiboy

I've got a chevy spark 2013 a/t, it was only 3k mileage when the problem occured. Whenever i manuever either left or right, engine check lights up and suddenly engine shuts off. I can hear a knocking sound whenever i do turn from left or right. GM said that there is carbon deposit so they instructed me to mix some fuel system cleaner every 2k kilometers. Quite costly for the maintenance. Why is it that it is producing carbon deposits? Need ur help pls