View Single Post
      09-21-2020, 09:24 AM   #6
Dpc2u
Captain
Dpc2u's Avatar
United_States
4278
Rep
742
Posts

Drives: 2011 E93 M3
Join Date: Feb 2019
Location: Tennessee

iTrader: (0)

It sounds like rod knock in the vid, but hard to judge by that. Another common source is the ac compressor. Sounds a lot like a rod knock. You could remove the belt and see if it goes away.