Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 11-06-2011, 11:47 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 22,084
Mein Auto: 02 BMW 525i M54 auto 130K
What specific gaskets could be a cause of vacuum-related or lean-misfire codes?

Over in this thread, we have listed almost two dozen part numbers and SAE-equivalent sizes for the specific pipes (rigid), hoses (multiple materials), tubes (single material), endcaps, and O-rings that can be the cause of vacuum leaks in the M54 (and M62) engine:
- Summary list of all vacuum-leak related pipes, tubes, hoses, endcaps & o-rings

Now it's time to explore vacuum-leak related gaskets.

Here are the gaskets I find by searching my M54 diagrams (but I don't know which contribute to a vacuum leak and I may have missed some):
  1. E39 525i Engine => Cylinder Head => Cylinder head cover
    • PN? valve cover gasket set (< 09/02 11-12-9-070-990, >= 09/02 11-12-0-030-496) $34.26/each)
    • 13 Gasket ring 1 11127526447 $4.12 (for oil filler hole? is this vacuum-leak related?)
    • 16 Set of profile gaskets 1 09/2002 11120030496 $38.45
  2. E39 525i Engine => Cylinder Head => Cylinder Head Vanos
    • 19 Gasket Steel 1 11361433817 $6.02 (is this a vacuum-related gasket)
  3. E39 525i Engine => Cylinder Head => Cylinder Head Attached Parts
    • 04 Cylinder Head Gasket Asbestos-Free 0,70MM 1 11127501304 $119.83 (why 2 part #s?)
    • 04 Cylinder Head Gasket Asbestos-Free 1,00MM(+0,3) 1 11127501305 $119.83 (why 2 part #s?)
  4. E39 525i Engine => Lubrication system => Lubrication system-Oil filter
    • 06 OFH Gasket 1 11421719855 $6.08
QUESTION:
Q: Which specific gaskets can be the cause of a lean mixture misfire condition?

Last edited by bluebee; 11-06-2011 at 12:22 PM.
Reply With Quote
Advertisement
  #2  
Old 11-06-2011, 12:12 PM
Manybrews Manybrews is offline
Officially Welcomed to the 'Fest
Location: Somewhere
 
Join Date: Sep 2011
Posts: 114
Mein Auto: Car
That's a very general question, and the answer is also pretty simple..
Any gasket located on the intake manifold. Any seal that is between the throttle and cylinder head ports on the intake runners or plenum assembly.
Reply With Quote
  #3  
Old 11-06-2011, 12:24 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 22,084
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by Manybrews View Post
Any seal that is between the throttle and cylinder head ports on the intake runners or plenum assembly.
This thread attempts to list them all, by name, & part number.

I doubt my first pass in the first post is accurate yet.

What did I miss? What should I add or remove?
Reply With Quote
  #4  
Old 11-06-2011, 12:35 PM
Manybrews Manybrews is offline
Officially Welcomed to the 'Fest
Location: Somewhere
 
Join Date: Sep 2011
Posts: 114
Mein Auto: Car
Honestly, ives never even thought about figuring out how many gaskets COULD create a vacuum leak... I've just dealt with the ones that do.
The most common causes of a lean condition on a M54 are
1)ruptured intake snorkel (although that's not technically a "vacuum leak" as the intake piping is not under vacuum).
2)a ruptured crankcase valve
3)a leaking disa valve (generally at the point of mounting, but the valve can also leak).
4)low fuel pressure.
5) a failing airflow sensor.

As you can see, most of those lean faults are not actually "vacuum leaks".
Any of the multitude of seals located on the intake manifold can cause a leak.... But most never will.
If you want all points on the car that COULD leak intake vacuum, we will be here a long time. Heck, just driving around with no dipstick will create an intake leak and lean codes. That's why it was eliminated from the n52, n54, and all subsequent engines.

Last edited by Manybrews; 11-06-2011 at 12:38 PM.
Reply With Quote
  #5  
Old 11-06-2011, 12:56 PM
himoura himoura is offline
Registered User
Location: Raleigh, NC
 
Join Date: Oct 2011
Posts: 33
Mein Auto: 2001 BMW 330i
yea i been thinking about this alot and its awesome to post them all but thats a lot of work to try to replace everything that could cause this.

the link below is a much better solution to this problem. if my problem turns out to be a vacuum leak and the shop is to expensive to use their smoker i am going to do this...

http://forum.e46fanatics.com/showthr...181&highlight=
Reply With Quote
  #6  
Old 11-06-2011, 01:54 PM
Steve530 Steve530 is offline
Officially Welcomed to the 'Fest
Location: Knoxville, TN
 
Join Date: Dec 2007
Posts: 1,281
Mein Auto: 2001 530i
Besides what you've listed, on my M54:

11611437453 Rubber Grommet (for the ICV)
11617502761 O-ring 7x3 distribution piece
13621743299 O-ring 8x3 temperature sensor air
__________________
Steve
2001 530i/5 S+P CDV delete/Akebono ceramic pads
M5 SSK/RedLine MTL/M5 rear sway bar/Bilstein HD
OSRAM CBI

BMWCCA Member #337964
Reply With Quote
  #7  
Old 11-06-2011, 04:34 PM
poolman poolman is offline
Officially Welcomed to the 'Fest
Location: martinsville va
 
Join Date: Nov 2005
Posts: 4,070
Mein Auto: 525i station wagon
Valve cover gasket--throttlebody gasket--intake manifold gasket--idle air control gasket
Reply With Quote
  #8  
Old 11-06-2011, 10:25 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 22,084
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by Manybrews View Post
The most common causes of a lean condition on a M54 are
1)ruptured intake snorkel (although that's not technically a "vacuum leak" as the intake piping is not under vacuum).
2)a ruptured crankcase valve
3)a leaking disa valve (generally at the point of mounting, but the valve can also leak).
These three are already amply covered in the referenced sister thread:
- Summary list of all vacuum-leak related pipes, tubes, hoses, endcaps & o-rings

Quote:
Originally Posted by Manybrews View Post
As you can see, most of those lean faults are not actually "vacuum leaks".
For the purpose of THIS thread, we'll concentrate ONLY on vacuum leaks that are due to gaskets leaking.

Quote:
Originally Posted by Manybrews View Post
If you want all points on the car that COULD leak intake vacuum, we will be here a long time.
You don't know us very well. Take a look at the sister thread to see the kind of detail we're looking for.

Quote:
Originally Posted by himoura View Post
but thats a lot of work to try to replace everything that could cause this.
Nobody said to replace all the gaskets. We're just trying to IDENTIFY all the gaskets that could be the cause of a vacuum leak.

Quote:
Originally Posted by Manybrews View Post
the link below is a much better solution to this problem.
I don't doubt a smoke machine is wonderful; but that's not the intention of this thread. This is not a diagnostic thread; it's an identification thread. We're trying to identify what gaskets can be the culprit when a vacuum leak is occurring.

Quote:
Originally Posted by Steve530 View Post
Besides what you've listed, on my M54:
11611437453 Rubber Grommet (for the ICV)
11617502761 O-ring 7x3 distribution piece
13621743299 O-ring 8x3 temperature sensor air
Thanks Steve for sticking to the topic and actually answering the question.

Before I go down your list, was my initial list OK?

I'm not sure. I knew the VCG could cause a vacuum leak; but I wasn't sure about the VANOS-related gasket, nor the OFH gasket, nor even the head gasket (which would cause far greater problems than just a vacuum leak).

Should I REMOVE any of those from consideration?

Anyway, going down your list, I find the suggested parts here in the Intake manifold system diagram, to which I'd add the DISA valve itself and the o-ring for the DISA valve:
  • E39 525i => Engine => Intake manifold => Intake manifold system
    • 10 Rubber grommet Qty=1 PN=11611437453 $20.65
    • 06 O-ring 7X3 Qty=6 PN=11617502761 $0.80
    • 04 O-ring 8X3 Qty=1 PN=13621743299 $1.25
    • 07 DISA Adjuster unit Q=1 PN=11617544806 $212.50 (the vacuum valves can go bad)
    • DISA O-ring
      • M52TU #11617504543 OEM size 50mm ID x 3.5mm thick x 57mm OD
      • M54 Chemgigi O-ring aftermarket 51mm ID x 2.5mm thick x 56mm OD
And, given that we're apparently including o-rings with gaskets, I'd have to add this information from Doru's fuel-injection DIY:
Quote:
Originally Posted by poolman View Post
Valve cover gasket--throttlebody gasket--intake manifold gasket--idle air control gasket
I think I have the VCG gasket listed in the first post (right?):
I added the idle air control gasket above.

But, is this the throttle body gasket?
And, is this the intake-manifold gasket you speak of?
  • E39 525i => Engine => Intake manifold => Intake manifold system
    • 02 Set of profile gaskets Qty=1 PN=11611436631 $63.30
Reply With Quote
  #9  
Old 11-06-2011, 11:41 PM
Steve530 Steve530 is offline
Officially Welcomed to the 'Fest
Location: Knoxville, TN
 
Join Date: Dec 2007
Posts: 1,281
Mein Auto: 2001 530i
Quote:
Originally Posted by bluebee View Post

Before I go down your list, was my initial list OK?

I'm not sure. I knew the VCG could cause a vacuum leak; but I wasn't sure about the VANOS-related gasket, nor the OFH gasket, nor even the head gasket (which would cause far greater problems than just a vacuum leak).

Should I REMOVE any of those from consideration?
I think you can remove the OFH gasket because it is under pressure from the oil pump.

I'm not sure about that VANOS gasket. The VANOS is under the valve cover which is vented to the CCV. I suppose it could cause a vacuum leak if it failed.

I'm not sure if you should include the head gasket either, but I'm sure it can be the source of a vacuum leak.
__________________
Steve
2001 530i/5 S+P CDV delete/Akebono ceramic pads
M5 SSK/RedLine MTL/M5 rear sway bar/Bilstein HD
OSRAM CBI

BMWCCA Member #337964
Reply With Quote
  #10  
Old 12-18-2014, 05:12 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 22,084
Mein Auto: 02 BMW 525i M54 auto 130K
According to Poolman today, all o-rings and gaskets which come in contact with oil have had the material change to the DuPont "Viton" material ... (edit ... corrected the spelling as per poolman in the next post).
> E39 (1997 - 2003) > Valve Cover Gaskets
Quote:
Originally Posted by poolman View Post
From what Ragaie told me, it's across the board,,all gaskets that come in contact with oil ,are now made from Viton. That includes the OFH.
__________________
Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 12-18-2014 at 10:31 AM.
Reply With Quote
  #11  
Old 12-18-2014, 06:54 AM
poolman poolman is offline
Officially Welcomed to the 'Fest
Location: martinsville va
 
Join Date: Nov 2005
Posts: 4,070
Mein Auto: 525i station wagon
BlueBee---I have misspelled the word for sometime now--and it should be Viton---just saying before the spelling Police come for you like they did for me--you should be Okay now. With the above--it just dawned on me,,one of the gaskets that are rarely ever changed ,, would be the o ring for the idle control valve...Hmmm Think I'll just spring for a new one of those...Merry Christmas.
Reply With Quote
  #12  
Old 12-18-2014, 10:30 AM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 22,084
Mein Auto: 02 BMW 525i M54 auto 130K
Quote:
Originally Posted by poolman View Post
it should be Viton
I have corrected it above. Thanks. (You never know with trademarks, particularly materials trademarks.)

Quote:
Originally Posted by poolman View Post
the o ring for the idle control valve...
Is that a gasket or an o-ring for the ICV?

If it's a gasket, we should make sure we have it listed in this thread; but if it's an o-ring, it should be in the thread below:
Complete list of all o-rings (by size & by part number) to buy when ordering parts
__________________
Please read the suggested threads, where the best always add value to those threads, either by pictures or by descriptions, so the next person with the same problem stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need

Last edited by bluebee; 12-18-2014 at 10:32 AM.
Reply With Quote
  #13  
Old 12-18-2014, 03:19 PM
poolman poolman is offline
Officially Welcomed to the 'Fest
Location: martinsville va
 
Join Date: Nov 2005
Posts: 4,070
Mein Auto: 525i station wagon
Shhh--Jim Levi jumped me just yesterdddday for misssspeeelling that woooord... And yes it's the 0 ring used for sealing the ICV. It mounts back into the intake behind the part.
Reply With Quote
Reply

Bookmarks

Tags
gaskets, lean codes, misfire, vacuum leak


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)
Today's Posts Search
Thread Tools
Display Modes

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 On



Forum Jump


All times are GMT -7. The time now is 03:37 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms