CCV/PCV Not the Problem?

Our03z4 · 12-24-2021, 02:09 PM

08 Z4 3.0si black cover. Replacing the diaphragm in the valve cover since I've been getting all sorts of issues, including tons of oil in the intake and lower DISA and running rich codes. Now I'm not sure if it is the CCV/PCV. I removed the cover on the diaphragm to do the "hack" with out replacing the valve cover but the diaphragm is only a little oily but otherwise in great shape, no tears or holes. Maybe this isn't my issue?

I did have too much crankcase pressure as well, difficult to remove oil cap, an oil leak at the valvetronic motor gasket when doing AutoX. Also looks like it went through the intake gaskets. DISA motors look fine, no broken flaps but covered in oil. I do smell fuel in the intake oil. Any other possible culprits? Thanks for any help!

wdb · 12-24-2021, 02:42 PM

Ugh. Combustion pressure getting into the crankcase? (Warning: internet wild-a**ed guess.)

Our03z4 · 12-24-2021, 04:02 PM

Quote:

Originally Posted by wdb

Ugh. Combustion pressure getting into the crankcase? (Warning: internet wild-a**ed guess.)

God I hope not lol. Coolant does drop ever so little over time. Oil is always clean though.

wdb · 12-24-2021, 09:34 PM

It’s not something I’ve ever heard of from the N52. Happy Holidays!

Our03z4 · 12-26-2021, 09:50 AM

Bump

Steeler · 12-26-2021, 12:55 PM

Any codes?
Are you seeing higher than normal oil consumption??

12-24-2021, 02:09 PM	#1
Our03z4 Captain 1691 Rep 685 Posts Drives: 2008 BMW Z4 3.0si Coupe, Join Date: Nov 2016 Location: USA iTrader: (0)	CCV/PCV Not the Problem? 08 Z4 3.0si black cover. Replacing the diaphragm in the valve cover since I've been getting all sorts of issues, including tons of oil in the intake and lower DISA and running rich codes. Now I'm not sure if it is the CCV/PCV. I removed the cover on the diaphragm to do the "hack" with out replacing the valve cover but the diaphragm is only a little oily but otherwise in great shape, no tears or holes. Maybe this isn't my issue? I did have too much crankcase pressure as well, difficult to remove oil cap, an oil leak at the valvetronic motor gasket when doing AutoX. Also looks like it went through the intake gaskets. DISA motors look fine, no broken flaps but covered in oil. I do smell fuel in the intake oil. Any other possible culprits? Thanks for any help!
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12-24-2021, 02:42 PM	#2
wdb dances with roads 4722 Rep 4,096 Posts Drives: '07 E86, '02 996, '95 Seven Join Date: Jul 2015 Location: the perimeter iTrader: (4)	Ugh. Combustion pressure getting into the crankcase? (Warning: internet wild-a**ed guess.)
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12-24-2021, 09:34 PM	#4
wdb dances with roads 4722 Rep 4,096 Posts Drives: '07 E86, '02 996, '95 Seven Join Date: Jul 2015 Location: the perimeter iTrader: (4)	It’s not something I’ve ever heard of from the N52. Happy Holidays!
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12-26-2021, 09:50 AM	#5
Our03z4 Captain 1691 Rep 685 Posts Drives: 2008 BMW Z4 3.0si Coupe, Join Date: Nov 2016 Location: USA iTrader: (0)	Bump
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12-26-2021, 12:55 PM	#6
Steeler Colonel 2429 Rep 2,704 Posts Drives: Built not Bought 04 Z4 VF Join Date: Feb 2013 Location: Kitchener Ontario Canada iTrader: (2)	Any codes? Are you seeing higher than normal oil consumption?? __________________ W2A Intercooled Vortech V3Si, custom ducting, Alpha N, 60# Bosch,2.62 pulley, multi port WMI, Severn Tuning(pokeybritches), Tial, magnaflow,SS race muffler, 42 design,3.91LSD, H&R, Hotchkis,ST coils,Konis, Megan camber arms, AKG SS, Nylon mounts, Poly bushings, Carbon interior, CF Aero.APEX
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