Came out today to check a gas leak on a Coleman furnace. Model #Tg8s100c16mp11, serial #W1l8279859. Upon arrival the homeowner showed me where peco found a leak. It is at the left 2 burners. Chud installed 12/2018, 5 year labor, 10-year parts warranty. After investigating peco was correct about the Leak. Recommend replacing the fuel delivery system. Once the repair is made I recommend performing preventative maintenance.