I have a Hyundai i20 1.0TGDI with 80k kilometers
For the last 4 months there is a strange sound when RPMs reach around 2k and especially noticeable when RPMs are dropping (by going to neutral or letting go of the accelerator)
I have uploaded 2 mp3 files
https://whyp.it/tracks/211680/full-sound?token=mx9s9 (going at 2k rpm and letting off, at 16s keeping constant 2k rpm. Higher than that noise is drowned out)
https://whyp.it/tracks/211682/sound ( 2 seconds right on letting go of the accelerator)
Car was serviced some weeks before the issue started being noticeable. Do you have any ideas?
