hey guys i have a 2010 galant with 51000 miles on it. question is its been wasting alot of gas lately alot more then usual, i checked for any gas leaks anywhere and i didnt find any, looked by the gas tank found nothing. i dont smell fuel i smell like a burning smell i dont know what else it could be any help would be greatly appreciated thanks

 

mass air flow, o2, vaccum leak, etc...any check engine lights?