If your gas grill burners are clean of grease and char buildup but they’re not getting hot, check your igniter and electrodes. When you turn on the igniter switch, the electrodes should spark. If they don’t, they may be dirty or rusty. You can remove surface rust with an emery cloth, but if there’s grease buildup on the electrodes, you need to replace them. Char-Broil offers electrodes that fit various gas grill models.