DIY Solution to M54-M52TU CCV problems

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DIY Solution to M54-M52TU CCV problems

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#32

07-04-2023, 10:36 AM

80stech

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Join Date: Mar 2016

Location: Saskatchewan Canada

Posts: 2,838

Something like a propane regulator would probably work nicely to regulate crankcase vacuum but on the fresh air side NOT on the vacuum side. The Wagner adjustable PCV valve in place of the 'magic' PCV valve listed in this thread is a better option as well. If memory serves, the E30 and others used full vacuum on the crankcase with only flow limited by an orifice. I think I have said most of this before but either way I'm done now.

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2008 X5 3.0 (new to me)

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ccv, oil separator, pcv, vacuum, ventilation

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