Thoughts where this leak is coming from...

Rob Daman · 11-07-2016, 11:44 AM

Hi guys,

I know for sure that I have a valve cover oil leak. Do you guys think this is oozing from up top and coming down to the frame or is it another issue I need to rectify?

Also when oil hits the hot exhaust doesn't it smoke white? I've been noticing that as well.

Thanks!

BashShah · 11-10-2016, 02:53 AM

It would be good if you can show this with the belly pan off?
Also, a picture showing how much oil is on the Belly Pan also, this will tell us the severity.

typeszh · 11-10-2016, 06:27 AM

You check your engine bay? You might be able to see where its coming from. Still trying to figure this one out myself.

mojobmw_e90 · 11-10-2016, 06:38 AM

Quote:

Originally Posted by typeszh

You check your engine bay? You might be able to see where its coming from. Still trying to figure this one out myself.

Looks like a oil filter housing is leaking. What I have learned from a few replacements, oem gaskets are the best. I have personally tried 2 diffrent ones and both ended up leaking after 5k or so. Did the gasket again for the 3 time with a oem on and been 10k oil free

floydarogers · 11-10-2016, 09:47 AM

My guess is that the OP has a leaking oil line to the turbos.

The oil filter housing gasket is leaking for the second poster.

GottWhat · 11-10-2016, 10:15 AM

Quote:

Originally Posted by floydarogers

My guess is that the OP has a leaking oil line to the turbos.

The oil filter housing gasket is leaking for the second poster.

That is where I would start as well. Clean the areas and check for leaks.

Rob Daman · 11-10-2016, 10:36 AM

thanks guys.

Kodak · 11-10-2016, 07:30 PM

I had an oil leak around there and it turned out to be coming from the 'crankcase valve(Pressure Regulating Valve), my Indy mechanic told me of a TSB from years ago about this type of leak and he was right and repaired it, hopefully this will offer some help.

He recommended to replace the below for my 2006/325xi/automatic sedan:

1- Oil Pressure Switch 12618611273
2- Crankcase Vent Valve (Pressure Regulating Valve)11617531423
3- Crankcase Vent Hose - Vent Valve to Intake Manifold 11617559530
4- Crankcase Vent Hose - From Vent Valve (Extraction Hose) 11157537701
5- Crankcase Vent Hose - Vent Valve to Valve Cover 11157522931
6- Vent Valve to Oil Return Tube 11157567801

Rob Daman · 11-15-2016, 11:11 AM

thanks.

gonna attack the valve cover gasket. i'm getting smoke coming out the hood and can smell the burn in the cabin now.

Quote:

Originally Posted by Kodak

I had an oil leak around there and it turned out to be coming from the 'crankcase valve(Pressure Regulating Valve), my Indy mechanic told me of a TSB from years ago about this type of leak and he was right and repaired it, hopefully this will offer some help.

He recommended to replace the below for my 2006/325xi/automatic sedan:

1- Oil Pressure Switch 12618611273
2- Crankcase Vent Valve (Pressure Regulating Valve)11617531423
3- Crankcase Vent Hose - Vent Valve to Intake Manifold 11617559530
4- Crankcase Vent Hose - From Vent Valve (Extraction Hose) 11157537701
5- Crankcase Vent Hose - Vent Valve to Valve Cover 11157522931
6- Vent Valve to Oil Return Tube 11157567801

11-07-2016, 11:44 AM	#1
Rob Daman Captain 32 Rep 826 Posts Drives: 2007 E90 335i Join Date: Mar 2014 Location: OC, CA USA iTrader: (2)	Thoughts where this leak is coming from... Hi guys, I know for sure that I have a valve cover oil leak. Do you guys think this is oozing from up top and coming down to the frame or is it another issue I need to rectify? Also when oil hits the hot exhaust doesn't it smoke white? I've been noticing that as well. Thanks! Attached Images __________________ Addicted to cars and modding... my car blog Vids of my cars and mods done
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11-10-2016, 02:53 AM	#2
BashShah Colonel 298 Rep 2,015 Posts Drives: 2012 335i Sedan Join Date: Oct 2012 Location: Vancouver, Canada iTrader: (0)	It would be good if you can show this with the belly pan off? Also, a picture showing how much oil is on the Belly Pan also, this will tell us the severity.
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11-10-2016, 06:27 AM	#3
typeszh Second Lieutenant 2 Rep 233 Posts Drives: E90 Join Date: Jun 2006 Location: Bay Area iTrader: (1)	You check your engine bay? You might be able to see where its coming from. Still trying to figure this one out myself. Attached Images
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11-10-2016, 09:47 AM	#5
floydarogers Curmudgeon and Pedant 690 Rep 3,489 Posts Drives: 2010 335d, 2014 328d Join Date: Nov 2012 Location: Bellevue, WA iTrader: (0)	My guess is that the OP has a leaking oil line to the turbos. The oil filter housing gasket is leaking for the second poster.
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11-10-2016, 10:36 AM	#7
Rob Daman Captain 32 Rep 826 Posts Drives: 2007 E90 335i Join Date: Mar 2014 Location: OC, CA USA iTrader: (2)	thanks guys. __________________ Addicted to cars and modding... my car blog Vids of my cars and mods done
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11-10-2016, 07:30 PM	#8
Kodak The Law 64 Rep 391 Posts Drives: 06 325xi, 4dr, Alpine Join Date: Apr 2008 Location: Bronx, NYC iTrader: (0)	Check the crankcase valve for oil leak I had an oil leak around there and it turned out to be coming from the 'crankcase valve(Pressure Regulating Valve), my Indy mechanic told me of a TSB from years ago about this type of leak and he was right and repaired it, hopefully this will offer some help. He recommended to replace the below for my 2006/325xi/automatic sedan: 1- Oil Pressure Switch 12618611273 2- Crankcase Vent Valve (Pressure Regulating Valve)11617531423 3- Crankcase Vent Hose - Vent Valve to Intake Manifold 11617559530 4- Crankcase Vent Hose - From Vent Valve (Extraction Hose) 11157537701 5- Crankcase Vent Hose - Vent Valve to Valve Cover 11157522931 6- Vent Valve to Oil Return Tube 11157567801 __________________ 2006 Alpine ,325xi sedan,Terra, steptronic,Xenon,heated seats,Premium package
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