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 > 3 Series / 4 Series > E46 (1999 - 2006)

E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

Reply
 
Thread Tools Display Modes
  #26  
Old 01-30-2013, 12:44 PM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Tell you what it can be:
Vanos is driving by oil passing selenoids. Once selenoid is switched, oil is passing other direction in Vanos.
Default position of vanos on cam shaft is mechanicaly locked inside. Vanos is driven to this position by coil spring (and oil) and other direction by oil.
So now, if there is something blocked inside vanos (or maibe thick oil...) vanos can be sticked or not locked when back in default position...

I had 1 Vanos off shaft and try to open it. But didn't have hammer screw driver. Its torx bit. Its too tight (or glued)

I know that by driving vanos, the engine can get some exhausts gases back for combusiton. Can it be the lost of compression?
Reply With Quote
  #27  
Old 01-30-2013, 01:01 PM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Darn... not sure if you can open at all vanos adjustment units from n42... And ofcourse they are expensive -.-
Reply With Quote
  #28  
Old 01-30-2013, 01:25 PM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Hey, i just remembed that i found this :
http://www.bimmerforums.co.uk/forum/...rried-t122549/
from my car too. just wondering if piece or couple found their way to vanos units...
My car had some issues with cylinder head past year and i think they didn't clean it well when they fixed it..
Reply With Quote
  #29  
Old 01-30-2013, 02:38 PM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
No, all plastic bits should stop at oil filter. Those there was found in oil cooler, so its on a way to oil filter.
BUT in a moment, when presure valve open, because the filter is blocked, some things can pass throught.
Definitely vanos will be a good place for them to stay in.

Vanos can be open. They are not any special. But the screws are tight. Without hammer screwdriver it can not be open. (Then also new screws are in need)

Last edited by neeeeo; 01-30-2013 at 02:41 PM.
Reply With Quote
  #30  
Old 01-31-2013, 11:51 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Okay. Now im close it is vanos problem.. just dont know wich part is broken. I just changed cross solenoid valves and it started to work. But.... i left accidentally lower valve about 1-2mm out. You dont see it if you dont look really close but it is not in its place. Now motor doesn't even sound funny... little loss on power thou. It's just... Vanos parts are so expensive... should narrow down the broken part before start to change them -.- .. i don't know how to narrow them. Any ideas?
Reply With Quote
  #31  
Old 02-01-2013, 11:26 AM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Want to see whats inside?

Google for this file:

mfp-brk-n42-de.pdf

Its in german, but its very helpfull.
Attached Thumbnails
Click image for larger version

Name:	Vanos.jpg
Views:	651
Size:	236.6 KB
ID:	360140  
Reply With Quote
  #32  
Old 02-01-2013, 11:31 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Thank you so much! have tried to find something like that about 3 days straight!
Reply With Quote
  #33  
Old 02-01-2013, 12:00 PM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
No problem mate. Just, if you decides to open the vanos, do some photos and share them. I like to see, how is the look on inside in real, after few thousand km...

I am also interesting in wear of the parts inside.
Reply With Quote
  #34  
Old 02-04-2013, 11:49 AM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Any thing new about your problem?
Reply With Quote
  #35  
Old 02-04-2013, 12:25 PM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Waiting for new solenoid valves and new vanos adjustment units and timing tools... i will open vanos units, if i can, just to see how they look , when i get new units. Will inform more when i get forward.
Reply With Quote
  #36  
Old 02-14-2013, 12:06 PM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Did you get in touch with new components?
Reply With Quote
  #37  
Old 02-15-2013, 02:29 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Actually got them yesterday but our garage is full now... I should be able to try them this weekend.
Reply With Quote
  #38  
Old 02-15-2013, 09:35 AM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Good luck. Hope it will fix the problem forever.
Reply With Quote
  #39  
Old 03-03-2013, 10:07 AM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Did you replaced the parts?
Reply With Quote
  #40  
Old 03-03-2013, 10:58 AM
A4driver A4driver is offline
Registered User
Location: Norway
 
Join Date: Mar 2013
Posts: 9
Mein Auto: E46 316ti
I'm following this thread, with all the same symptoms as described here. Have been giving up finding the issue on my n42.

Here in Norway its always cold, so I do this to being able to start cold engine:
Disconnect valvetronic motor
Start the engine
Reconnect valvetronic.
Then after engine is warm, I restart and valvetronic is working juddery, but drivable
(if this is not done, it stalls when valvetronic is supposed to take over for throttle operation after cold start)

Last edited by A4driver; 03-03-2013 at 11:05 AM.
Reply With Quote
  #41  
Old 03-03-2013, 11:12 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Yep.. timings now right and parts have been replaced.. guess what. issue still here.. F*ck... Double checked timing and losing my mind now -.-

Last edited by JakuLuka; 03-03-2013 at 11:13 AM.
Reply With Quote
  #42  
Old 03-03-2013, 11:36 AM
A4driver A4driver is offline
Registered User
Location: Norway
 
Join Date: Mar 2013
Posts: 9
Mein Auto: E46 316ti
Can anyone tell me how hard the eccentric shaft is supposed to turn when valvetronic motor is off? Mine is so hard, that i need to use a spanner to turn it. The spring in the end off the shaft is not having any function than to decorate, so I have started to suspect that the shaft sits to hard. The spring don't push it to a kind of stop position when switching ignition off. In idle or while driving and gives throttle slow, there is no misfiring, but if I hit the floor, its several misfires and judders before it accelerate.

Last edited by A4driver; 03-03-2013 at 11:37 AM.
Reply With Quote
  #43  
Old 03-03-2013, 11:41 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti

mine starts
But i think i can turn eccentric shaft up pretty easily.. haven't test how it turns on the other way..
Reply With Quote
  #44  
Old 03-03-2013, 11:49 AM
A4driver A4driver is offline
Registered User
Location: Norway
 
Join Date: Mar 2013
Posts: 9
Mein Auto: E46 316ti
Seems like the same problem I have. I'm also having the traction control lamp blinking as you do when the start problem is there. Cant understand why... When valvetronic is of, this lamp don't light up. When engine is warm, start up works just fine.
Reply With Quote
  #45  
Old 03-03-2013, 12:05 PM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Oh F*ck... Haven't notice that before thanks for pointing that up.. But i wanted to ask you did you have something done to your motor before problem started?
Reply With Quote
  #46  
Old 03-03-2013, 12:33 PM
A4driver A4driver is offline
Registered User
Location: Norway
 
Join Date: Mar 2013
Posts: 9
Mein Auto: E46 316ti
It came sneaking over time. Just periodically in beginning. After last summer, the problem has been all the time.
Reply With Quote
  #47  
Old 03-05-2013, 12:51 PM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
Quote:
Originally Posted by A4driver View Post
Can anyone tell me how hard the eccentric shaft is supposed to turn when valvetronic motor is off? Mine is so hard, that i need to use a spanner to turn it. The spring in the end off the shaft is not having any function than to decorate, so I have started to suspect that the shaft sits to hard. The spring don't push it to a kind of stop position when switching ignition off. In idle or while driving and gives throttle slow, there is no misfiring, but if I hit the floor, its several misfires and judders before it accelerate.
Sounds like the shaft is sticked. My was moveable (not by hand), but the spring moved it from 3/4 of way to end (4/4) a keep it there.
The shaft is siting on needle bearings (4x no.13). If there are some bits inside bearing, the needles can be blocked.



I think the shaft can be removed without dismantling the cam shafs. (but not shure, because its some time ago I done it...)
Attached Thumbnails
Click image for larger version

Name:	head.png
Views:	130
Size:	36.0 KB
ID:	364908  

Last edited by neeeeo; 03-05-2013 at 12:58 PM.
Reply With Quote
  #48  
Old 03-06-2013, 11:48 AM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti
Not sure if it means anything but i think my valvetronic gets the end points in different order than in this video :
Reply With Quote
  #49  
Old 03-07-2013, 10:35 AM
neeeeo neeeeo is offline
Registered User
Location: Slovakia
 
Join Date: Feb 2012
Posts: 20
Mein Auto: E46 - 318i N42
What you mean different?
Make a video if you can.
Did you open the old vanos?
Reply With Quote
  #50  
Old 03-07-2013, 02:00 PM
JakuLuka JakuLuka is offline
Registered User
Location: Finland
 
Join Date: Jan 2013
Posts: 30
Mein Auto: E46 316ti

this is mine...
i didn't open vanos units yet coz don't really have time for that yet .. have to get bmw to everyday use first....
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E46 (1999 - 2006)
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 08:42 AM.


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