Cgun

Hello , I recently bought a nissan march k12 2002 There is problem , when accelerating a noise comes from the front . The front vibrates and the sound goes like 'brrrrrrrr'. I already showed this problem to a mechanic and he said that its the silencer and its loose. So he fixed it but still the problem exists. Does anyone know what the issue is? Also i heard that there is a place speaclized in nissan march repairs but it couldnt find it. If you know this place pls reply.