nosiy on idle
 

i have a 06 mazda 6 v6 manual and its making a clicking noise on idle after driving it the car runs fine and there dont seem to be a problem with it but its too nosiy it only has 13k miles on it but im afraid to bring it back to the dealer cause i did the cold air intake and the exhaust i dont think its the oil cause i been running nothing but mobil 1 and i poured a bottle of lucas oil to see if it helped but it didnt can anyone please help