BMW 3-Series (E90 E92) Forum - View Single Post - Random puff of smoke out of N54? Hard to track down.

N54_e90 · 04-05-2021, 11:27 AM

Same issue, its probably turbo or possibly valve seals. Maybe adding a low side PCV catch can may help, this is my next step. Already have RB PCV, high side catch can and walnut blasted recently.

04-05-2021, 11:27 AM	#6
N54_e90 Don 46 Rep 299 Posts Drives: '09 E90 335xi Family Sedan Join Date: Jan 2017 Location: Your Mother's House iTrader: (0)	Same issue, its probably turbo or possibly valve seals. Maybe adding a low side PCV catch can may help, this is my next step. Already have RB PCV, high side catch can and walnut blasted recently.
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