Oil in intake manifold

Suhb · 01-13-2016, 07:46 PM

Recently my starter motor blew out. While I had the intake manifold off I noticed oil inside the manifold and around the gaskets. Where is this coming from?

I'm about to put the manifold back on now. Any swift advice is appreciated

RoundelM3 · 01-14-2016, 07:13 AM

Crankcase ventilation system (PCV valve) - it feeds back into the intake tract. Much worse in the turbo engines. Nothing to be too concerned about.

Suhb · 01-14-2016, 12:14 PM

Good to know. Coincidentally, I broke the crankcase ventilation hose last night. For anyone looking to take off the intake manifold, be careful, this hose is FRAGILE.

Blacksport · 01-14-2016, 01:13 PM

definitely replace the PVC valve...

Suhb · 01-14-2016, 03:05 PM

http://www.realoem.com/bmw/enUS/show...diagId=11_3737

Part #14? That's what I broke and ordered another one of.

My understanding is that the PCV valve is built into the valve cover.

E90ALLMANUAL · 01-16-2016, 05:56 PM

Quote:

Originally Posted by Suhb

http://www.realoem.com/bmw/enUS/show...diagId=11_3737

Part #14? That's what I broke and ordered another one of.

My understanding is that the PCV valve is built into the valve cover.

The PVC is built into the valve cover on the N52N(plastic valve cover). The early engines, the PVC it's under the intake manifold.

01-13-2016, 07:46 PM	#1
Suhb First Lieutenant 119 Rep 377 Posts Drives: 2010 128i Coupe 6-Speed Join Date: Dec 2012 Location: PA iTrader: (3)	Oil in intake manifold Recently my starter motor blew out. While I had the intake manifold off I noticed oil inside the manifold and around the gaskets. Where is this coming from? I'm about to put the manifold back on now. Any swift advice is appreciated Last edited by Suhb; 01-13-2016 at 07:58 PM..
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01-14-2016, 07:13 AM	#2
RoundelM3 Major General 1837 Rep 6,990 Posts Drives: 15 F80 M3, 22 G01 X3 30i Join Date: Apr 2010 Location: Clayton, NC iTrader: (2) Garage List 2022 BMW X3 [9.83] 2015 BMW M3 [6.50]	Crankcase ventilation system (PCV valve) - it feeds back into the intake tract. Much worse in the turbo engines. Nothing to be too concerned about. __________________ 2015 F80 ///M3 Sedan 7DCT Tanzanite, 2022 X3 sDrive30i 8AT Brooklyn Grey
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01-14-2016, 12:14 PM	#3
Suhb First Lieutenant 119 Rep 377 Posts Drives: 2010 128i Coupe 6-Speed Join Date: Dec 2012 Location: PA iTrader: (3)	Good to know. Coincidentally, I broke the crankcase ventilation hose last night. For anyone looking to take off the intake manifold, be careful, this hose is FRAGILE.
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01-14-2016, 01:13 PM	#4
Blacksport Second Lieutenant 54 Rep 246 Posts Drives: 2013 128i Join Date: Oct 2013 Location: Ft Lauderdale iTrader: (0)	definitely replace the PVC valve... __________________ '13 128i 6sp, '19 Cherokee Ltd 3.2, '17 Ducati SuperSport S *Gone But Not Forgotten:* 74 Z28, 77 Datsun 280Z (1st 5sp in US), 92 Nissan 300ZTT, 94 MB SL600 V12, 01 M Roadster, 66 Yamaha TwinJet 100, 70 Suzuki X6 Hustler *Race:* GP/FP Spitfire SCCA, Merlyn FF SCCA, Mazda RX7 IMSA GTU, Yamaha FZR 400 AMA.
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01-14-2016, 03:05 PM	#5
Suhb First Lieutenant 119 Rep 377 Posts Drives: 2010 128i Coupe 6-Speed Join Date: Dec 2012 Location: PA iTrader: (3)	http://www.realoem.com/bmw/enUS/show...diagId=11_3737 Part #14? That's what I broke and ordered another one of. My understanding is that the PCV valve is built into the valve cover. Last edited by Suhb; 01-14-2016 at 04:00 PM..
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