F30POST
F30POST
2012-2015 BMW 3-Series and 4-Series Forum
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read
BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > Valve Cover Gasket Replacement
Extreme Powerhouse
Post Reply
 
Thread Tools Search this Thread
      01-14-2021, 09:13 AM   #1
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Valve Cover Gasket Replacement

So my valve cover (I assume) seems to be leaking. It seems like the oil leak is towards the rear of the valve cover, by the firewall, and is dripping down onto the underbody cover. From doing some research it seems like the gasket almost always leaks off to the side and makes it's way onto the downpipe where it will smoke and smell.

Has anyone ever experienced a leak towards the back of the valve cover with no signs of smoke/smell? I'm just trying to make sure this is where the leak seems to be coming from before I place my order from FCP for a new valve cover kit...

My list is:

- New Valve Cover. Comes with all bolts and gaskets.
- BMW Valvetronic Actuator Seal with new self tapping screws
- New PCV Vent Hose

I recently replaced my coolant overflow hose, so that's new. I believe I have all the tools necesarry to do the job except for some crowfeet wrench adapters to torque the gas lines down. Anything I'm missing?
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-14-2021, 10:46 AM   #2
F32Fleet
Major General
F32Fleet's Avatar
United_States
2566
Rep
9,307
Posts

Drives: 2015 435i
Join Date: May 2005
Location: Southeastern US

iTrader: (0)

Quote:
Originally Posted by XxThe_RemedyXx View Post
So my valve cover (I assume) seems to be leaking. It seems like the oil leak is towards the rear of the valve cover, by the firewall, and is dripping down onto the underbody cover. From doing some research it seems like the gasket almost always leaks off to the side and makes it's way onto the downpipe where it will smoke and smell.

Has anyone ever experienced a leak towards the back of the valve cover with no signs of smoke/smell? I'm just trying to make sure this is where the leak seems to be coming from before I place my order from FCP for a new valve cover kit...

My list is:

- New Valve Cover. Comes with all bolts and gaskets.
- BMW Valvetronic Actuator Seal with new self tapping screws
- New PCV Vent Hose

I recently replaced my coolant overflow hose, so that's new. I believe I have all the tools necesarry to do the job except for some crowfeet wrench adapters to torque the gas lines down. Anything I'm missing?
Your description is typical of a VC leak.
These I6 are rotated about 15 degrees to the passenger side and so oil pools at the passenger side rear of the valve cover.

I don't think you're missing any parts.
__________________
"Drive more, worry less. "

435i, MPPK, MPE, M-Sport Line
Appreciate 1
Polo088161313.00
      01-14-2021, 11:17 AM   #3
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Quote:
Originally Posted by F32Fleet View Post
Your description is typical of a VC leak.
These I6 are rotated about 15 degrees to the passenger side and so oil pools at the passenger side rear of the valve cover.

I don't think you're missing any parts.
Thanks man, much appreciated!
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-14-2021, 02:02 PM   #4
Insane435
Major
Insane435's Avatar
United_States
282
Rep
1,070
Posts

Drives: 435ix M Sport EWG
Join Date: Jul 2016
Location: Michigan

iTrader: (1)

List looks good. My valve cover failed in the same spot. I would get puffs of smoke and a bad smell when it hit the exhaust. My car had ~80k miles at the point of replacement.
__________________
2014 EBII 435ix - OEM Front pipe + SSS2 + VRSF Race, Evolution Racewerks Downpipe - Chargepipe - Intercooler, Bootmod3 7.1, xHP Stage 3 Trans Tune, NGK 97506's, AFE Dry Filter, KW V1, Forgestar F14 19s, Pilot 4S, M Performance Brakes, M Power Pads
2011 BSM 328ix & 2018 LBB X4M40i
Appreciate 1
AmuroRay507.50
      01-14-2021, 06:49 PM   #5
Tpriest7893
Captain
United_States
131
Rep
647
Posts

Drives: Bmw 335i f30 N55
Join Date: Nov 2017
Location: Venice Florida

iTrader: (0)

When my mechanic first told me I had the valve cover leak he said the engine was towards the back of the engine. Never had smell or smoke.

I eventually fixed with warranty. Mine was done around 65-70k miles I believe
__________________
2012 bmw 335i sedan
VRSF catless DP
VRSF 5? HD IC
Stock intake(had open before and was sick of noise)
BMS CP
550i 351m rims with 275/245 set up.
No tune as of yet.
Appreciate 0
      01-14-2021, 07:27 PM   #6
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Just ordered everything up and hopefully will have the parts by Saturday. Looking forward to fixing this. The only thing I worry about is rolling the gasket when installing the new one. Wonder if I should pick up some gasket tack... FCP says the gaskets and bolts are preinstalled so I'm hoping they're in there nice and tight. I ordered all OEM parts so they should be good.
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-14-2021, 07:31 PM   #7
Insane435
Major
Insane435's Avatar
United_States
282
Rep
1,070
Posts

Drives: 435ix M Sport EWG
Join Date: Jul 2016
Location: Michigan

iTrader: (1)

Quote:
Originally Posted by XxThe_RemedyXx View Post
Just ordered everything up and hopefully will have the parts by Saturday. Looking forward to fixing this. The only thing I worry about is rolling the gasket when installing the new one. Wonder if I should pick up some gasket tack... FCP says the gaskets and bolts are preinstalled so I'm hoping they're in there nice and tight. I ordered all OEM parts so they should be good.
Just feel around the edge, there is enough room to do so. Can also use a mirror to look at it. My gaskets have always stayed in without any tack.
__________________
2014 EBII 435ix - OEM Front pipe + SSS2 + VRSF Race, Evolution Racewerks Downpipe - Chargepipe - Intercooler, Bootmod3 7.1, xHP Stage 3 Trans Tune, NGK 97506's, AFE Dry Filter, KW V1, Forgestar F14 19s, Pilot 4S, M Performance Brakes, M Power Pads
2011 BSM 328ix & 2018 LBB X4M40i
Appreciate 0
      01-15-2021, 08:39 AM   #8
Zyler
Private
25
Rep
56
Posts

Drives: 2013 335xi MSport
Join Date: Nov 2016
Location: Tristate

iTrader: (1)

See if the valve cover screws are loose first. Loose screws were found during the valve cover replacement by myself and a some others on this forum. On mine the they were in the back left, where the leak was. You may be able to stop the leak just by tightening. Worth a shot.
Appreciate 0
      01-15-2021, 02:35 PM   #9
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Quote:
Originally Posted by Zyler View Post
See if the valve cover screws are loose first. Loose screws were found during the valve cover replacement by myself and a some others on this forum. On mine the they were in the back left, where the leak was. You may be able to stop the leak just by tightening. Worth a shot.
Looks like all the parts will be here tomorrow (FCP Euro FTW)... I will check this when I start cranking on them.
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-16-2021, 01:23 PM   #10
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Just started in with the replacement and have noticed that I'm missing a vacuum hose and line from the old valve cover. Anyone know why these would be missing? The hose near the PCV is totally gone and the rear vacuum is missing as well. One of the rears is supposed to be capped and the other is a vacuum line leading somewhere, but not sure as it is missing.
Attached Images
  
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-16-2021, 02:13 PM   #11
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Also, my fuel rail lines look different from the N55 F30 videos I've seen... One side is a normal craw foot nuts, the other side looks pressed in? Anyone know how to remove these?
Attached Images
  
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 1
AmuroRay507.50
      01-16-2021, 02:37 PM   #12
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Fuel rail is removed easily with 4 bolts holding it to the intake manifold.
Attached Images
 
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 1
AmuroRay507.50
      01-16-2021, 03:31 PM   #13
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Annnnd out!!!
Attached Images
    
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 1
AmuroRay507.50
      01-16-2021, 03:42 PM   #14
thejeremyman9
Brigadier General
thejeremyman9's Avatar
2321
Rep
4,570
Posts

Drives: 2015 BMW 335i
Join Date: May 2019
Location: Cali

iTrader: (0)

Quote:
Originally Posted by XxThe_RemedyXx View Post
Just started in with the replacement and have noticed that I'm missing a vacuum hose and line from the old valve cover. Anyone know why these would be missing? The hose near the PCV is totally gone and the rear vacuum is missing as well. One of the rears is supposed to be capped and the other is a vacuum line leading somewhere, but not sure as it is missing.
Are you sure those are actually ports and not just plugged holes?
Appreciate 0
      01-16-2021, 03:51 PM   #15
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Quote:
Originally Posted by thejeremyman9 View Post
Quote:
Originally Posted by XxThe_RemedyXx View Post
Just started in with the replacement and have noticed that I'm missing a vacuum hose and line from the old valve cover. Anyone know why these would be missing? The hose near the PCV is totally gone and the rear vacuum is missing as well. One of the rears is supposed to be capped and the other is a vacuum line leading somewhere, but not sure as it is missing.
Are you sure those are actually ports and not just plugged holes?
Check out 8:45 in this video...

__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-16-2021, 06:52 PM   #16
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Great success!
Attached Images
 
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-16-2021, 07:38 PM   #17
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

If anyone has questions please feel free to message me. This was a great experience and I learned a lot.
Attached Images
 
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 1
AmuroRay507.50
      01-16-2021, 08:41 PM   #18
435gc
First Lieutenant
435gc's Avatar
129
Rep
363
Posts

Drives: 2015 435i Gran Coupe xdrive
Join Date: May 2019
Location: Charlotte

iTrader: (0)

Nice. Congrats 👏

How long did it take you?
Appreciate 0
      01-16-2021, 09:01 PM   #19
XxThe_RemedyXx
Colonel
Greece
712
Rep
2,163
Posts

Drives: 2014 335i XDrive
Join Date: Aug 2009
Location: Westchester, NY

iTrader: (0)

Quote:
Originally Posted by 435gc View Post
Nice. Congrats 👏

How long did it take you?
I was going reaaaaaally slow.... Took me like 6 hours but I could do it quicker if I had to. I'm glad I replaced the PCV hose. The old one was extremely brittle and falling apart.
__________________
'14 335 xDrive EWG FBO - VRSF Chargepipe - VRSF Catless Downpipe - AA Intercooler - MPE - BM3 Stage 2 E30 OTS - R1 Concepts Front/Rear Geomet Cross Drilled and Slotted Rotors - xHP Stage 3 8AT
Appreciate 0
      01-16-2021, 11:22 PM   #20
GAB0
Private
29
Rep
83
Posts

Drives: F30 335i Msport
Join Date: Dec 2020
Location: San Diego

iTrader: (0)

This was so encouraging, specially cause I know now it's doable in one day. My car has 35 thousand miles so I should be ok. Regardless, thanks for sharing.
Appreciate 0
      01-17-2021, 11:35 PM   #21
jgoens
Major General
jgoens's Avatar
3678
Rep
5,821
Posts

Drives: 2013 335i msport
Join Date: Nov 2014
Location: San Mateo, CA

iTrader: (0)

I have been putting off this job for awhile...do get smoke and see oil at rear passenger side. What I am wondering us why replace whole cover instead if just gasket? How hard was it to replace the vent hose, as far as bottom connection goes?
Appreciate 0
      01-18-2021, 06:43 AM   #22
cjlane
Private First Class
cjlane's Avatar
41
Rep
162
Posts

Drives: F30 335i xDrive
Join Date: Oct 2017
Location: Pittsburgh, PA

iTrader: (7)

Quote:
Originally Posted by jgoens View Post
I have been putting off this job for awhile...do get smoke and see oil at rear passenger side. What I am wondering us why replace whole cover instead if just gasket? How hard was it to replace the vent hose, as far as bottom connection goes?
The cover gets brittle and is prone to cracking. Since you are already there, it's a good idea to replace the cover at the same time.
__________________
2014 F30 335i xDrive 6MT - Pure Stage 2 GFB DV / Inlet | XDI-35 HPFP | Fuel-It PI w/ AIC and LPFP Upgrade | BM3 | Fabspeed Catted DP | Dinan axle back | VRSF Race FMIC/CP | Dinan CAI | KW V3 | Wiechers CF strut bar | Dinan ARB | Spec stage 2+ clutch SMFW | Full M Performance Interior | M Performance BBK | Vorsteiner VFF107 MPS4S | Jordan Tuned Full E85 - 558WHP/520TQ on Mustang Dyno
Appreciate 0
Post 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



All times are GMT -5. The time now is 06:55 PM.




f30post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
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