[quote=Czar;3828269]If during long periods of idle, enough internal pressure does build, it will push open the PCV valve flap, releasing the pressure, however if this valve flap does not open for one reason or another, there is an external pressure release valve, on the back of the cam cover, on all December 2008 built engines onwards.
See image below, the top cam cover is in the image is fitted with the external pressure release valve.
Does this mean on a 2007 MCS I shouldn't apply this pcv deletion mod? Because of the lack of a the external pressure release valve?
I've read alot about this on lots of different sites toda and I'm thinking of doing this mod to my wifes MCS.
What I'd like to know is has anyone done this and has is solved the heavy oil consumption problem a lot of 2nd generation MCS owners have including my wifes.
[quote=MiniMotoR56;3847931] You can fit the blanking caps even though you don't have the external pressure relief valve, as providing the PCV valve flap which feeds into the air intake pre turbo is functioning, this will relieve any excess pressure.
Fitting of the blanking caps can help reduce oil consumption!
The oil mist isn't sprayed it is vacuum drawn through the intake tract.
The N18 engine still has two PCV systems just like the N14, however unlike the external rear PCV feed to the intake manifold, the N18 engine's rear PCV is internal which still feeds oil mist direct into the intake runner tract in the cylinder head.
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i fitted these blanking plugs on 09 mcs, on start up i get a smell of oil think this is coming from vent on rocker anyone else noticed this?
These are now fitted as standard to rcz 207 ds 3 models fitted with this engine, instead of redesigning rocker and manifold so pug/cit are addressing this issue but mini are blind to the problem, have spoke to tech after tech at bmw and there s no problem?
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