2013 Nissan Other chattering sound.

Hello, I have the 2013 juke 1.6 liter 4 cylinder turbocharger. From day one I noticed a chattering or tapping sound coming from the pulleys side it's louder on this side when I first start. After driving around it seems to go away but I can hear this sound driving by a building and overpasses. Took it to dealership they couldn't duplicate the sound but I recorded the sound on my phone and let them listen to it. They still didn't do anything. It's more like a charpping sound. They said it could be the belt because it's cold. But it still does it when it's warm outside. They also said it could be the bearing s. If you could respond I would like to send you the recording and let you decide. Oh and now not always but now and then when I come home and park two loud popping thumping sound coming from engine compartment. Pop pop or thump thump. Please help Thank you.