BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i) - View Single Post

dtla1 · 06-15-2020, 02:03 PM

Hard to tell, maybe good to do a boost leak test. Also, could be any of those you mentioned plus torn BOV diaphragm, PCV/Valve cover broken, some random boost leak etc.

06-15-2020, 02:03 PM	#2
dtla1 Colonel 828 Rep 2,232 Posts Drives: 2011 135i, Space Grey Join Date: Apr 2014 Location: Silicon Valley iTrader: (2)	Hard to tell, maybe good to do a boost leak test. Also, could be any of those you mentioned plus torn BOV diaphragm, PCV/Valve cover broken, some random boost leak etc.
	Appreciate 0 Quote