Thread: F20 B48 engine strange humming intermitent sound when idle
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      05-30-2019, 02:14 PM   #2
tearus
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Drives: 120i 2017
Join Date: Apr 2019
Location: Uruguay

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Someone also mentioned it here: https://f30.bimmerpost.com/forums/sh....php?t=1566730 but there is no concrete answer
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