BMW 1-Series Forum (F20) 135i - 1Addicts.com - View Single Post - F20 B48 engine strange humming intermitent sound when idle

tearus · 05-29-2019, 01:39 PM

Hello, I have a 120i (f20) which is making a strange sound when idle, I took it to the official service but they don't know what it might be. Any ideas? Thanks
Here is the video:

https://streamable.com/7z4ms

05-29-2019, 01:39 PM	#1
tearus Registered 2 Rep 3 Posts Drives: 120i 2017 Join Date: Apr 2019 Location: Uruguay iTrader: (0)	F20 B48 engine strange humming intermitent sound when idle Hello, I have a 120i (f20) which is making a strange sound when idle, I took it to the official service but they don't know what it might be. Any ideas? Thanks Here is the video: https://streamable.com/7z4ms
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