I have a 2013 2.7 and i have this weird tick wich sounds like an exhaust leak, but it only happens at idle when the truck is warmed up at or close to operating temp(very seldom i hear it wile accelerating). I am wondering about what they changed from 2010 to 2013.. i know they put in the air pump for emmisions but what else if anything. I had a 2010 with 35k and it didnt make this noise ever, i can hear it inside the cab at stoplights and what not. Mabey its the injectors? but it don't do it all the time and my 2010 was not nearly as loud. Anyone with a 2012 or 13 have this issue?
Here's a video