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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > DIY Guides > DIY E90 N54 Valve Cover Gasket



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robc1976's Avatar DIY E90 N54 Valve Cover Gasket
by Robc
robc1976
11-28-2012
Seems this DIY has never been done but it needs to be. It's really not that hard and the dealer charges $1000+ to do this. Ridiculous.

Disclaimer: I am not responsible for any damage done to your car following this tutorial. Worked perfectly for mine so it...
  #66  
By tys90 on 01-22-2014, 01:02 PM
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Does anyone know the part number for the bolts holding down the wiring harness? The two pointed out in the left side of this photo:

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  #67  
By iturbo_bmw on 01-30-2014, 04:38 PM
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So are you guys replacing all those bolts with new ones or just reusing them?

I'm thinking about just ordering 10 bolts in case i mess up a couple. My car has 53k miles. Should i just go ahead and order all the bolts just to be safe?
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  #68  
By prepster on 02-13-2014, 02:57 AM
Nice write up, I plan to do this valve cover gasket replacement soon, and have a couple questions…

1) where is the PCV located in the engine.
2) Do you have to move aside the ecu wire harness to get clearance of the top left corner (saw the video on this thread and wondering if its the same as in the 328 example)
3)after disconnecting the battery, fuel lines, sensors, will there be any codes that need to be reset/cleared or should everything start up without any codes on the dash.
4) any special tools that makes life so much easier during this install (such as special sockets, extensions, etc..)

Thanks again for posting this DIY, really helps getting another set of instructions besides the manual
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  #69  
By 123Britt on 02-13-2014, 07:56 AM
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Wire Harness (2) Bolts

Quote:
Originally Posted by tys90 View Post
Does anyone know the part number for the bolts holding down the wiring harness? The two pointed out in the left side of this photo:

I was planning to reuse both -- alum bolts (marked blue) but broke one of them. I was using my dial torque wrench and it broke at running torque. My guess is all the heat mad it weak. I picked it up at the dealership and did not save the part #. The bolt needs to be alum to eliminate dissimilar corrosion. As far as other VC bolts -- I just bought an assortment and reused many. The dealership techs told me that they only replace the ones in the corners + and bad looking ones. All mine looked good. However, being alum bolts the do stretch during torque. They (BMW) did suggest that I use Hondabond sealant. All went well and no leaks. Thanks for all the forum help -- could not own a BMW without this site!!!!!!!!!!!!!!
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  #70  
By ChapJohn on 02-21-2014, 01:56 PM
For parts you might take a look at www.realoem.com, put in the last 7 of your VIN and then pick out your part from the appropriate exploded diagram. ECS Tuning offers some of the parts, via a link on the page, but I don't buy from them always, depending on what I need.
Anyway, I just finished my valve cover gasket. 2008 335i with 67k on the clock. It was leaking around two spark plugs, and along the front lower edge. After I removed the cover (the most frustrating V/C I have ever tried to work on) I found the cover itself has a small crack, looks like an impact mark (car was damaged and repaired). I plan to fix that with a little JB Weld!!!! FYI, I worked on fork lifts and firetrucks when I was a mechanic, so I'm no stranger to aggravating jobs, but this one was intimidating at times. Did not remove injectors as someone suggested, and reused the bolts, without mishap. 90 inch pounds on the button.
This thing's a hoot to drive, but it is so labor intensive, I'm about to end my long-term relationship with German cars. I grew up near where the Bimmer factory is now located in upstate SC, but brand loyalty and local manufacture only goes so far. . .
For now, I'm goin' drivin!!!!!
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  #71  
By le0.br4zuc4 on 03-02-2014, 09:55 AM
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Very good guide. I was doing great until I snapped the ground wire bolt, (1 of the 3 nuts and wires on the image below) when I was putting it back together. Hopefully everything is okay after that's done.



I need to figure out how to remove the broken bolt. Does anyone have an idea?

I tried to fire up the car but the engine turned over and never started, I hope this is the reason.
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  #72  
By TeutonicFlight on 03-02-2014, 01:05 PM
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Quote:
Originally Posted by le0.br4zuc4
Very good guide. I was doing great until I snapped the ground wire bolt, (1 of the 3 nuts and wires on the image below) when I was putting it back together. Hopefully everything is okay after that's done.



I need to figure out how to remove the broken bolt. Does anyone have an idea?

I tried to fire up the car but the engine turned over and never started, I hope this is the reason.
Hi. Ground is probably one of the most important aspects of any electrical system - particularly when it relates to car electronics.
Gotta ground it
When there's a broken bolt or stud to be extracted , I've found that utilizing a set of " reverse " drill bits
( yes reverse ) along with a medium to big torque drill will almost always walk out the severed stud.
It's a little miracle worker that reverse drill bit set. Start off with the smallest one that's seemingly strong enough , center it on broken bolt and just let the drill and bit do the work. Don't force don't press too hard and voila ! Removal successful. Good luck and keep the shiney side up !
- Z
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  #73  
By iturbo_bmw on 03-07-2014, 03:04 PM
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Can sombody please tell me the part numbers for the following images pleasee

1. the circle thing covering the bolt right under the windshield


2. the part number for the bolts holding the wires in place

thanks!
Attached Images
  
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  #74  
By le0.br4zuc4 on 03-09-2014, 01:02 PM
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Quote:
Originally Posted by Zundefolge View Post
Hi. Ground is probably one of the most important aspects of any electrical system - particularly when it relates to car electronics.
Gotta ground it
When there's a broken bolt or stud to be extracted , I've found that utilizing a set of " reverse " drill bits
( yes reverse ) along with a medium to big torque drill will almost always walk out the severed stud.
It's a little miracle worker that reverse drill bit set. Start off with the smallest one that's seemingly strong enough , center it on broken bolt and just let the drill and bit do the work. Don't force don't press too hard and voila ! Removal successful. Good luck and keep the shiney side up !
- Z
Thank you very much for your help mate, unfortunately the broken stud didn't come out, not even with a stud extractor. I am really depressed with this and I have no idea about what to do.

I'm trying to avoid taking to a shop because they will see I have no idea how to fix it and they will charge a s***t load of money to fix it
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  #75  
By TeutonicFlight on 03-10-2014, 10:07 AM
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Yikes. Sorry man.
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  #76  
By rvruggiero on 03-16-2014, 03:37 PM
All,

So i attempted this job and like the poster above, had the same issue. I broke the top right bolt (one of the bigger ones) on the valve cover, I broke two bolts on the electrical harness attachment to the cover and I broke two of the 6 injector connectors removing the valve cover from the bay. Any help and ideas would be appreciated.

Thanks!
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  #77  
By Jklad on 03-17-2014, 09:39 PM
Man, people are breaking things left and right with this job. Is this typical?
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  #78  
By dylim on 03-17-2014, 11:42 PM
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Quote:
Originally Posted by Jklad View Post
Man, people are breaking things left and right with this job. Is this typical?
Seems more typical for the older cars that used aluminum bolts.
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  #79  
By Hex335i on 03-18-2014, 08:26 PM
I just did this job and only broke one of the injector securing tab and that's about it, just to make the job done you do have to remove the ecu cover and get the 3 wiring sets of the locking position, also the vc left corner near the firewall hits a metal line(ac I think) so keep an eye on that area and for sure someone to help you it's a plus. I also found easier removing the spark plugs sleeves before removing the vac and put them back after the cvs was back in, thanks for all the info on this DIY
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  #80  
By rvruggiero on 03-18-2014, 08:43 PM
Hex-I broke two of the Injector connectors...do you plan on replacing them? Both plugs seem to fit in snugly and aren't lose..but I'm sure they aren't as tight with the tops missing from the female end of the holder. Thoughts?
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  #81  
By rvruggiero on 03-18-2014, 08:43 PM
Oh and I agree...the plug sleeves are what broke my connectors ..they are annoying. Remove before removing cover.
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  #82  
By Hex335i on 03-19-2014, 08:15 PM
RV i just put a little of silicone on the top part (above the little gasket ), that's what a friend that is a master mechanic told me to do, it was pretty tide so I really doubt it will com loose, I hope this help you too
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  #83  
By sy2767 on 03-19-2014, 10:10 PM
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Sorry but i didn't take the time to read all the pages, what are your oil change intervals? Looks very clean in there.
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  #84  
By allan on 03-28-2014, 12:17 PM
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...I think I didn't overlook it.

I'm looking for the torque of the bolts for the strut tower brace and as previously asked by someone.
What's the torque on the fuel line fittings ?

Thanks.

.
Last edited by allan; 03-28-2014 at 02:44 PM.
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  #85  
By TeutonicFlight on 04-01-2014, 08:59 AM
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Quote:
Originally Posted by dylim
Quote:
Originally Posted by Jklad View Post
Man, people are breaking things left and right with this job. Is this typical?
Seems more typical for the older cars that used aluminum bolts.
Lol. Older cars. The bolts are designed and intended to be torqued once and replaced after removed. They are an essential part of the oiling routes as well.
Save a few bucks and take your chances ? As with all things - You get what you pay for. Assurance.
Also - do NOT use a driver larger than 1/4" to torque them down. Any larger ratchets and you're almost sure of a snapped head.
Just my experience and two cents throwing in here. Left hand drill bit set on hand too !!!

And flood the entire area under hood and especially at rear of head with lots of light ! It helps.
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  #86  
By allan on 04-04-2014, 06:20 PM
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Just done. THANK YOU so much for the great instructions.
I would say it took me between 5-6 hours. Took my time.
My biggest problem was to get the strut bold loose.
Now I just hope it last a bit longer than the last one.

.
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  #87  
By robc1976 on 04-04-2014, 09:25 PM
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Quote:
Originally Posted by allan View Post
Just done. THANK YOU so much for the great instructions.
I would say it took me between 5-6 hours. Took my time.
My biggest problem was to get the strut bold loose.
Now I just hope it last a bit longer than the last one.

.
Awesome!
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