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Old 02-27-2017, 12:25 PM   #1
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Join Date: Dec 2014
Location: Vilnius, LT
Posts: 13
My Ride: 330ci
m54 oil pressure

To be short, Im building a m54b30 with a gtx35. I've just started the car and left it to idle until it gets to working temps. The thing I've noticed and why I'm here is that I have pressure under the valve cover.

Previously I had a catch can installed with oil return pipe blocked of.
Pipe came to the catch can, then to pcv valve, and then to the intake.
I had vacuum under the valve cover.

Now the intake is blocked off, oil return pipe still blocked off, and valve cover is venting to the atmosphere with a filter.

Is that a wrong set up or am I missing something?
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Old 02-27-2017, 03:57 PM   #2
Registered User
Join Date: Dec 2014
Location: Vilnius, LT
Posts: 13
My Ride: 330ci
okay, so after some research and fresh air, I came to the conclusion that is it normal.
the pressure is quite low.
system is disconnected from the intake, so that's why no vacuum.
as Im not intending on doing a closed system, that is something I will have to live with )
thanks for viewing, this one can be closed
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