E90Post
 


ECS BMW
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Mechanical Maintenance: Break-in / Oil & Fluids / Servicing / Warranty > N54 Oil Leak Under Plastic Engine Shroud



Reply
 
Thread Tools Search this Thread
      07-24-2016, 04:44 PM   #1
maaaaackle
Enlisted Member
maaaaackle's Avatar
0
Rep
46
Posts

Drives: 2011 BMW 335is
Join Date: Jan 2016
Location: California

iTrader: (1)

N54 Oil Leak Under Plastic Engine Shroud

Hey guys,

I have a '11 BMW 335is and I pulled the plastic shroud off the engine and noticed oil pooling next to the spark plugs. I have attached some photos here to better illustrate what I'm seeing.





According to the Carfax, this car had the valve cover gasket replaced about 30k miles ago. Could this be a failing gasket again?


Any ideas?
Appreciate 0
      07-24-2016, 05:34 PM   #2
Donutz
Private First Class
6
Rep
114
Posts

Drives: 335i
Join Date: Sep 2015
Location: Toronto, eh

iTrader: (2)

Cracked valve cover
Appreciate 0
      07-24-2016, 08:28 PM   #3
maaaaackle
Enlisted Member
maaaaackle's Avatar
0
Rep
46
Posts

Drives: 2011 BMW 335is
Join Date: Jan 2016
Location: California

iTrader: (1)

Ouch. Thats gonna turn a 100 dollar job into a 500 dollar one.

I figured it was a crack valve cover...they just had to make the damn thing out of plastic huh.
Appreciate 0
      07-25-2016, 04:39 AM   #4
Phil325i
Lieutenant Colonel
Phil325i's Avatar
United Kingdom
60
Rep
1,841
Posts

Drives: E92 325i MSport Coupe
Join Date: Apr 2012
Location: UK South East

iTrader: (0)

Garage List
Agreed. Only other possibility - I notice the oil pools are adjacent to the filler (and that you have a non-standard filler cap). Any chance you could have spilled oil around the filler, which has run down? Might be worth thoroughly cleaning off first and see if it returns, before you strip off the cover...
__________________
E92 pre-LCI 325i - Ohlins R&T; H&R spacers; M3 strut brace; Swift thrust sheets; BMS clutch stop; BMS CDV; RE g/box mounts; Saikoumichi OCC; K&N; Cyba scoops; BA diff brace; BMW Perf Exhaust; M3 rear spoiler; M3 white dash LEDs; LED Angels; LED side repeaters; BMW Perf black grille; CSL reps; SSDD carbon diffuser; Monster Wrap black roof
Appreciate 0
      07-25-2016, 07:35 AM   #5
Bamaben
Captain
Bamaben's Avatar
35
Rep
807
Posts

Drives: 07 335i blk/blk/alum 6MT
Join Date: Jun 2010
Location: Alabama

iTrader: (0)

Yeah that's an e36 M3 oil cap. Too weird it's only oil in those 2 places next to cap. Don't think a cracked cover would cause oil in those 2 cylinders and not everywhere else under there. Bet someone spilled there by accident. Clean and monitor
__________________


It takes a big man to cry. It takes an even bigger man to laugh at him-- Jack Handey

mods: blackout grill, finishing rods, badges, Blacklines.
Appreciate 0
      07-25-2016, 12:15 PM   #6
maaaaackle
Enlisted Member
maaaaackle's Avatar
0
Rep
46
Posts

Drives: 2011 BMW 335is
Join Date: Jan 2016
Location: California

iTrader: (1)

I never suspected the oil cap to be at fault. I bought the cap from ECS and they listed the E92 as a model that would fit it. I can try the OEM cap to see if that changes anything.

Its not just the two holes pictured that have oil in em, there is oil further back (towards the cabin) on the engine as well.
Appreciate 0
      07-25-2016, 12:19 PM   #7
N8N
Lieutenant Colonel
N8N's Avatar
United_States
54
Rep
1,643
Posts

Drives: 2009 E92 335i 6MT
Join Date: Sep 2012
Location: Sterling, VA

iTrader: (2)

Send a message via AIM to N8N Send a message via MSN to N8N Send a message via Yahoo to N8N
I had a leaking VCG and the VC was *not* cracked, FWIW.

I dunno why this is an issue at barely over 100K miles when I can buy an aftermarket reusable Fel-Pro steel core/silicone rubber gasket for my Heep that is reusable and will probably outlast the rest of the vehicle.
Appreciate 0
      07-25-2016, 12:36 PM   #8
maaaaackle
Enlisted Member
maaaaackle's Avatar
0
Rep
46
Posts

Drives: 2011 BMW 335is
Join Date: Jan 2016
Location: California

iTrader: (1)

Quote:
Originally Posted by N8N View Post
I had a leaking VCG and the VC was *not* cracked, FWIW.

I dunno why this is an issue at barely over 100K miles when I can buy an aftermarket reusable Fel-Pro steel core/silicone rubber gasket for my Heep that is reusable and will probably outlast the rest of the vehicle.
I guess it's just the nature of the beast
Appreciate 0
      07-25-2016, 09:54 PM   #9
Donutz
Private First Class
6
Rep
114
Posts

Drives: 335i
Join Date: Sep 2015
Location: Toronto, eh

iTrader: (2)

I'm pretty sure this is a crack. Just above the injector.



Here's a pic of my crack:



Here's a pic of another car I worked on:



All the cracked valve covers I've personally seen were all cracked in the same place.
Appreciate 0
      07-26-2016, 02:17 AM   #10
maaaaackle
Enlisted Member
maaaaackle's Avatar
0
Rep
46
Posts

Drives: 2011 BMW 335is
Join Date: Jan 2016
Location: California

iTrader: (1)

That most certainly does look like a crack.

I'll investigate further. Thanks again for all the input Donutz!
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -4. The time now is 08:57 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2016, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST