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 08-18-2008, 09:24 AM
John@AstigRacing John@AstigRacing is offline
Past Sponsor
Location: SoCal
 
Join Date: Feb 2008
Posts: 501
Send a message via MSN to John@AstigRacing Send a message via Yahoo to John@AstigRacing
Mein Auto: 2000 528i Sport
Radiator Drain Plug - Please Help

I did some research but couldn't find a DIY.

Can someone please help me how to loosen my radiator drain plug? I tried to loosen it but I could only turn it halfway. The plug is located on the driver side and the color is blue or green right?
Reply With Quote
Ads by Google
  #2  
Old 08-18-2008, 09:51 AM
mhughett mhughett is offline
Officially Welcomed to the 'Fest
Location: Tulsa
 
Join Date: Apr 2007
Posts: 462
Mein Auto: 2003 530i/2007 Z4 Coupe
very simple. Assuming you have the type of drain plug that has a tab that you can turn with your thumb and index finger (as opposed to a flat round plug that just screws in and out), once you turn it counterclockwise 90 degrees, take a pair of pliars and grab hold of the tab and wiggle it while you pull it downward. This should break the seal and cause coolant to go everywhere--hopefully in your drain pan.
__________________
2003 530i 5-speed, SP, PP, CWP, Xenon
Bilstein Sports
UUC short shifter with DSSR and ZHP shift knob
Michelin Pilot Sport A/S
BSW IQ speakers, Sirius
CDV delete
Huper Optik tint

2007 X3 3.0si
6-speed manual, CWP, Xenon, Cft. Seats, Premium Pkg, Sirius, Privacy glass
Reply With Quote
  #3  
Old 08-18-2008, 10:18 AM
John@AstigRacing John@AstigRacing is offline
Past Sponsor
Location: SoCal
 
Join Date: Feb 2008
Posts: 501
Send a message via MSN to John@AstigRacing Send a message via Yahoo to John@AstigRacing
Mein Auto: 2000 528i Sport
Quote:
Originally Posted by mhughett View Post
very simple. Assuming you have the type of drain plug that has a tab that you can turn with your thumb and index finger
That's what I have. Thank you.
Reply With Quote
  #4  
Old 01-21-2009, 11:04 AM
truelies truelies is offline
Officially Welcomed to the 'Fest
Location: Houston
 
Join Date: Apr 2006
Posts: 582
Mein Auto: 528i 2000
Anyone know where is the engine drain screw? I know it's at the second exhaust part of engine, but can't find one. With out this, we can't completely flush the coolant out.
Reply With Quote
  #5  
Old 01-21-2009, 11:38 AM
mmm635's Avatar
mmm635 mmm635 is offline
Officially Welcomed to the 'Fest
Location: Jackson, MS
 
Join Date: Mar 2005
Posts: 1,179
Mein Auto: '02 525i Sp/5, 95 FJ80 LC
Quote:
Originally Posted by truelies View Post
Anyone know where is the engine drain screw? I know it's at the second exhaust part of engine, but can't find one. With out this, we can't completely flush the coolant out.

This is where it is on my 525 and should be no different on your 528 - helped a buddy with his 528 a few weeks ago. Only took a picture of mine during the process.
__________________
Michel

2002 Sterling Gray/
Black 525i Sport Pics
Reply With Quote
  #6  
Old 01-22-2009, 08:41 AM
cn90 cn90 is online now
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,762
Mein Auto: 1998 528i 5-sp 140K+
RE: Engine Drain Plug (Not Radiator Drain Plug):

1. Personally, I think it is a waste of time/effort to get to this engine drain plug b/c I flushed the entire engine block with my garden hose, so all the stuff are washed out anyway.
It is quicker and easier this way.

2. However, if you insist on draing the engine block, then here it is.
It is a P.I.T.A. to get to, under the 2nd exhaust manifold (for cylinders 4-5-6).
It is very difficult to get to it from above!
From below, prepare to plug it with your finger, otherwise you make take a shower of coolant.
When removing the engine drain plug, the washer has a tendency to stick to the engine block.
Remove the washer and re-install in the exact same orientation (watch for the indentation on the washer created by the screw and re-install the same way).
Of course you can use a new washer.
However, I have re-used all of my washers (engine oil drain plug washers in my BMW and Volvo, coolant washers) for 20 years without a single problem, as long as the washer is:
- still good looking and serviceable.
- re-installed in the same orientation.

But again ----> go for item #1 above Do NOT waste your time/effort on this stupid plug.
Looking at the second picture of the typical I6 engine layout, then you will see that it is a P.I.T.A. to get to this engine drain plug.
Attached Thumbnails
Click image for larger version

Name:	M52-engine.jpg
Views:	10357
Size:	67.7 KB
ID:	172724   Click image for larger version

Name:	M52-engine-02.jpg
Views:	1640
Size:	344.4 KB
ID:	172725  

Last edited by cn90; 01-22-2009 at 08:48 AM.
Reply With Quote
  #7  
Old 01-22-2009, 12:10 PM
cn90 cn90 is online now
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,762
Mein Auto: 1998 528i 5-sp 140K+
Also, I for got to mention that if you are doing a COOLING System Overhaul, the WP is removed anyway. Have a look at this picture, the WP sits at the same level as the drain plug ----> NO advantage to remove this PITA drain plug once the WP is out.
Attached Thumbnails
Click image for larger version

Name:	M52-engine-03.jpg
Views:	680
Size:	29.4 KB
ID:	172728  
Reply With Quote
  #8  
Old 02-26-2009, 07:45 AM
truelies truelies is offline
Officially Welcomed to the 'Fest
Location: Houston
 
Join Date: Apr 2006
Posts: 582
Mein Auto: 528i 2000
Great, then I can find it. I worked the way you did through the WP, but I couldn't input 10.2 oz coolant to the machine. There have some coolant or water left inside. I know it at 2nd cylinder, but I thought it counts from front to rear.

BTW, is this picture your car? What's the "RKK" fan holder and the pole?

Last edited by truelies; 02-26-2009 at 08:43 AM.
Reply With Quote
  #9  
Old 03-04-2009, 08:29 PM
jerrybsal jerrybsal is offline
Officially Welcomed to the 'Fest
Location: arizona
 
Join Date: Feb 2005
Posts: 100
Mein Auto: 2004 545i
Hey CN90 your comment....1. Personally, I think it is a waste of time/effort to get to this engine drain plug b/c I flushed the entire engine block with my garden hose, so all the stuff are washed out anyway.
It is quicker and easier this way.

How do you do it with a garden hose? I am going to just replace my upper and lower radiator hoses so I figured I would do a radiator flush while I am at it. I have done a search but I only find the complete overhaul and I don't need that. Is there a DIY for just a flush on a 98 528? Thx
Reply With Quote
  #10  
Old 03-05-2009, 08:43 AM
cn90 cn90 is online now
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,762
Mein Auto: 1998 528i 5-sp 140K+
Quote:
Originally Posted by jerrybsal View Post
....How do you do it with a garden hose? I am going to just replace my upper and lower radiator hoses so I figured I would do a radiator flush while I am at it. I have done a search but I only find the complete overhaul and I don't need that. Is there a DIY for just a flush on a 98 528? Thx
What I meant about garden hose is only for when you do a complete cooling overhaul. See Fig. 11 in my write-up for the 1998 528i:
http://www.bimmerboard.com/forums/posts/199986

Now, if you want to flush the easy way (or "lazy" way), my suggestion is:

1. Drain coolant through the radiator drain stopc-o-c-k or by disconnecting the lower radiator hose.
2. Refill with distilled water.
3. Set HVAC to HOT.
4. Run engine until the Temp is at 12 o' clock.
(Make sure you bleed it a bit b/c of the notorious E39 air pocket issue, remember air is introduced when you drain the coolant).
5. Wait for engine to cool down then drain the coolant again.

6. Repeat Steps 1-5 a few times using only distilled water.
7. Now your cooling system contains mostly (90%) water after a few of these cycles.

8. Taking note that the cooling system is 11.1 qts. Drain the coolant one last time.
Now add approx 5.5 qt of pure coolant to get the 50-50 mixture.

HTH.

Last edited by cn90; 03-05-2009 at 12:25 PM.
Reply With Quote
  #11  
Old 03-09-2009, 08:48 AM
mmm635's Avatar
mmm635 mmm635 is offline
Officially Welcomed to the 'Fest
Location: Jackson, MS
 
Join Date: Mar 2005
Posts: 1,179
Mein Auto: '02 525i Sp/5, 95 FJ80 LC
Since we are on the subject, I found a pic of the block drain plug on my computer when I did my last coolant flush. This pic is for a 2002 525i M54 engine and the plug is located on the passenger side under cylinder #2.

Attached Thumbnails
Click image for larger version

Name:	IMG_2482.JPG
Views:	197
Size:	206.7 KB
ID:	177027  
__________________
Michel

2002 Sterling Gray/
Black 525i Sport Pics
Reply With Quote
  #12  
Old 03-09-2009, 09:02 AM
cn90 cn90 is online now
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,762
Mein Auto: 1998 528i 5-sp 140K+
Thanks Michel,

This is my point all along, removing this engine drain plug is a pain from above, there is simply no room to get to it unless you have tiny hands.

From below, be prepared for a nice coolant shower in your hair and eyes!

So my point all along is: there is an easier alternative (which is draing from the radiator-c-o-c-k) ---> why not do it the easier way?
Reply With Quote
  #13  
Old 03-09-2009, 09:48 AM
mmm635's Avatar
mmm635 mmm635 is offline
Officially Welcomed to the 'Fest
Location: Jackson, MS
 
Join Date: Mar 2005
Posts: 1,179
Mein Auto: '02 525i Sp/5, 95 FJ80 LC
Quote:
Originally Posted by cn90 View Post
Thanks Michel,

This is my point all along, removing this engine drain plug is a pain from above, there is simply no room to get to it unless you have tiny hands.

From below, be prepared for a nice coolant shower in your hair and eyes!

So my point all along is: there is an easier alternative (which is draing from the radiator-c-o-c-k) ---> why not do it the easier way?
I hear ya!

From Below...the way I do it in my garage (I have kids and dog) and keep everything clean is to use a flexible tube (Autozone- used on older cars for air intake) and hold it next to the drain hole. This can also be modified to insert a funnel and clamped which can then be propped next to the drain hole and left alone. Once the drain plug loosened, just let it drop down the tube and into the drain pan. The coolant pretty much drains out of the block without any mess whatsoever.

Otherwise...follow CN90's suggestions.

Here are some pics of what I explained above...Coolant System Flush Pics from Drain Plug in Block - Cylinder 2
__________________
Michel

2002 Sterling Gray/
Black 525i Sport Pics
Reply With Quote
Reply

Bookmarks


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 11:02 AM.


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