After changing timing belt ( with idler and tensioner ) balance belt with tensioner - i've this noise from engine on low revs.
Timing Belt - Dayco Kit KTB314
Balance belt - Dayco
Tensioner - QH
Timing Belt Noise - YouTube
(this is not my vehicle, i've alfa - but noise is same )
Water Pump was not changed, it's not Aux belt noise - because this noise remains when i remove aux belt. It's not balance belt because again noise exist ( but much harder to hear it, you need to go near engine when without balance belt to hear it ).
So my opinion there is something wrong with Dayco kit - maybe tensioner, maybe idler. One of service guys told me that it can be Variator noise - but as i know Variator noise is more like Diesel noise, and this noise is more like turbo noise.
So just need you advises? BTW water pump was not changed, can water pump make such noise?
I'm already thinking in buying new timing belt kit ( this time original one )