Dear nice People,
My car is Mazda 323 Familia year 1997. I bought it about 3 months ago.
The car was very bad condition at the beginning, and I tried to service it to make it better condition.
Today it feels better.
Anyway, I still have some problem on this car, I tried to browse the similar topics which related to my car problem but can't find them. Hope you all not boring because I will ask you one by one for each problem.

Right now when the rpm decrease at about 1000 rpm there is sounds BUP BUP from air intake hose. The sound heard a bit loud. The car runs well but the vibration is felt on steering wheel.


Please give me some feedback.
Thanks in advance.