View Single Post
      10-10-2022, 01:05 PM   #9
TopJimmy
Major General
TopJimmy's Avatar
United_States
5462
Rep
5,154
Posts

Drives: 2023 M3 Comp xDrive
Join Date: Jul 2019
Location: Chester County, PA

iTrader: (5)

Quote:
Originally Posted by Tangent View Post
I think what actually finally fixed it was replacing the crankcase vent hose on the front of the valve cover. I replaced the valve cover itself again (gotta love FCP Euro's warranty) but also replaced the hose and the noise went away. When I cut the insulation away from the old hose the inside was cracked and came completely apart with very little flexing.
So the squeal was coming from the crack in the hose, under the insulation sleeve??? Good find!

Gotta add that to the find-a-squeal checklist.
__________________
'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
Appreciate 0