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 > 6 Series

6 Series
The BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

Reply
 
Thread Tools Display Modes
  #1  
Old 04-13-2013, 09:37 PM
Chico 6series Chico 6series is offline
Registered User
Location: St. Louis, MO
 
Join Date: Jan 2013
Posts: 15
Mein Auto: 645Ci
05 645Ci... I have a bad coolant leak that i just discovered... Any suggestions???

Anyone know what the problem could be???
Reply With Quote
Ads by Google
  #2  
Old 04-13-2013, 10:28 PM
07 E63650i's Avatar
07 E63650i 07 E63650i is offline
Living in Fast Forward
Location: Southern California, USA
 
Join Date: Jan 2013
Posts: 2,939
Mein Auto: 2007 BMW E63 650i
Quote:
Originally Posted by Chico 6series View Post
Anyone know what the problem could be???
A coolant leak could have many different scenarios. First one I'd check for is the expansion tank for any leaks as these are prone to wear and tear. Also check the coolant hoses as well as the weep hole. These engines are known for the infamous coolant pipe issue.
__________________
Once a 6'er, always a 6'er.
Reply With Quote
  #3  
Old 04-13-2013, 10:48 PM
Nitrogen's Avatar
Nitrogen Nitrogen is offline
Officially Welcomed to the 'Fest
Location: Central California
 
Join Date: Apr 2012
Posts: 421
Mein Auto: BMW 650i Convertible
Quote:
Originally Posted by 07 E63650i View Post
A coolant leak could have many different scenarios. First one I'd check for is the expansion tank for any leaks as these are prone to wear and tear. Also check the coolant hoses as well as the weep hole. These engines are known for the infamous coolant pipe issue.
+1 on the tank, check easy stuff first as stated by E63650i worst case is the dreaded coolant pipe under the intake manifold, hope it's not that big job!!!
__________________
Sent Via iPhone using BimmerApp
Reply With Quote
  #4  
Old 04-13-2013, 11:35 PM
tampamark tampamark is online now
Officially Welcomed to the 'Fest
Location: tampa fl
 
Join Date: Jan 2009
Posts: 2,706
Mein Auto: 2006 650 convertible!!!
You need to get into your engine bay and see where it is coming from. If it is coming out of the engine itslef you could have the dreaded Coolant Pipe failure. Break out your wallet!

Other more common culprits are the expansion tank, it is a 20 minute repair from what I have read. Realoem has it listed at $79.

Other culprits are the small plastic hose that runs across the front of the engine along the top of the radiator. Then check the lower radiator hose, to check this jack the car up and remove the bottom shroud. The common failure here is the temperature sensor, the good news for this one is that it takes a $1 O-ring that you can get in Home Depot. I have listed the thread below that explains it.

http://www.bimmerfest.com/forums/sho...d.php?t=578644

Good luck!
Reply With Quote
  #5  
Old 04-14-2013, 08:12 PM
HerbP HerbP is offline
Officially Welcomed to the 'Fest
Location: Georgia
 
Join Date: Jul 2009
Posts: 2,457
Mein Auto: 2005 645Ci & 2007 750Li
As stated above, the 3 biggest leak opportunities are the expansion tank, the bleed line, & the o-ring on the temp sensor on the lower radiator hose. If you continue to let the car run hot, the expansion tanks will fail very fast. When you find the leak, it will be a time to change & flush the coolant system. Use BMW coolant, & demineralized water. If the coolant is leaking from the front center part of the engine, your coolant pipe o-ring might be starting to fail. This is a very expensive repair. There is an aftermarket repair kit available, to replace the coolant pipe. Inspect the engine bay very close for your leaking part. The coolant pipe usually starts to fail between 60 to 100k miles. It will happen eventually!

Good Luck!
Reply With Quote
  #6  
Old 04-14-2013, 09:30 PM
Chico 6series Chico 6series is offline
Registered User
Location: St. Louis, MO
 
Join Date: Jan 2013
Posts: 15
Mein Auto: 645Ci
Thanks for all the information, I really appreciate it! Taking it to the shop in the morning.
Reply With Quote
  #7  
Old 04-21-2013, 06:13 PM
645ciDream 645ciDream is offline
Registered User
Location: Virginia
 
Join Date: May 2009
Posts: 12
Mein Auto: 645 ci
Appears I now have a coolant leak. Based on comments above, i believe it's -- the small plastic hose that runs across the front of the engine along the top of the radiator. I've attached a photo of what my hose/engine area looked like this morning. I'm not a DIYer so what's this going to cost me?
Attached Thumbnails
Click image for larger version

Name:	645ciCoolantLeak1.jpg
Views:	118
Size:	152.3 KB
ID:	372562  
Reply With Quote
  #8  
Old 04-21-2013, 06:24 PM
Yorgi's Avatar
Yorgi Yorgi is offline
Officially Welcomed to the 'Fest
Location: Toronto
 
Join Date: Mar 2005
Posts: 3,381
Mein Auto: '04 M3 / '06 650i Cab
The part costs $40 at Tischer. See #10 in this diagram.
__________________
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

Reply With Quote
  #9  
Old 04-23-2013, 12:07 PM
soldier-ina-6er soldier-ina-6er is offline
Registered User
Location: Tacoma, Washington
 
Join Date: Feb 2013
Posts: 67
Mein Auto: 2005 645CI, sport package
Quote:
Originally Posted by 645ciDream View Post
Appears I now have a coolant leak. Based on comments above, i believe it's -- the small plastic hose that runs across the front of the engine along the top of the radiator. I've attached a photo of what my hose/engine area looked like this morning. I'm not a DIYer so what's this going to cost me?
WTF dude...What happened to your engine bay? I live on the coast of washington and my engine bay looks a thousand times better than that. I don't want to be a dick man but clean your engine bay every once and a while. It'll save you a lot of headaches and your car won't look like it has leprosy.

yeesh.
Reply With Quote
  #10  
Old 04-23-2013, 08:47 PM
Yorgi's Avatar
Yorgi Yorgi is offline
Officially Welcomed to the 'Fest
Location: Toronto
 
Join Date: Mar 2005
Posts: 3,381
Mein Auto: '04 M3 / '06 650i Cab
Quote:
Originally Posted by soldier-ina-6er View Post
WTF dude...What happened to your engine bay? I live on the coast of washington and my engine bay looks a thousand times better than that. I don't want to be a dick man but clean your engine bay every once and a while. It'll save you a lot of headaches and your car won't look like it has leprosy.

yeesh.
His engine bay is fine. You are seeing white residue from dried coolant which is spraying around the area in the picture due to the leak.
__________________
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

Reply With Quote
  #11  
Old 04-24-2013, 12:46 PM
645ciDream 645ciDream is offline
Registered User
Location: Virginia
 
Join Date: May 2009
Posts: 12
Mein Auto: 645 ci
Quote:
Originally Posted by Yorgi View Post
His engine bay is fine. You are seeing white residue from dried coolant which is spraying around the area in the picture due to the leak.
Spouting off when you don't know your stuff doesn't help anyone. Yes, what you were seeing was from the coolant leak. Yorgi thanks for the part/cost info and having my back.
Reply With Quote
  #12  
Old 04-25-2013, 02:03 AM
All-Or-Nothing's Avatar
All-Or-Nothing All-Or-Nothing is offline
Woo Hoo FREE Donuts
Location: Big Ol' House
 
Join Date: Mar 2007
Posts: 780
Mein Auto: 2004 645Ci Convertible
Quote:
Originally Posted by soldier-ina-6er View Post
WTF dude...What happened to your engine bay? I live on the coast of washington and my engine bay looks a thousand times better than that. I don't want to be a dick man but clean your engine bay every once and a while. It'll save you a lot of headaches and your car won't look like it has leprosy.

yeesh.


__________________
Reply With Quote
  #13  
Old 04-25-2013, 08:04 AM
bimmerzone's Avatar
bimmerzone bimmerzone is offline
Supporting Vendor
Location: West Chester PA
 
Join Date: Jul 2005
Posts: 579
Mein Auto: E63 650i
Thank goodness its not the weephole issue...

If you do need the Vent pipe, we have it for $43 shipped
http://www.bimmerzone.com/product/BMW-17127534917.html
__________________


| Bimmerzone.com | 1-800-357-7797 | info@bimmerzone.com | 831 Lincoln Ave, Suite 3, West Chester PA 19380 |

Video about Bimmerzone: http://www.youtube.com/watch?v=me5pjPS88Bw

We are proud to be Authorized Dealers for: Sprint Booster, Peake Research, Eisenmann Exhaust, Hartge, RPI Exhaust, AutoEnginuity, Bentley Publishers, Zymol, P21S, PowerFlex USA, Brembo GT, KW, Hawk and much more!!
Reply With Quote
  #14  
Old 04-25-2013, 09:21 AM
soldier-ina-6er soldier-ina-6er is offline
Registered User
Location: Tacoma, Washington
 
Join Date: Feb 2013
Posts: 67
Mein Auto: 2005 645CI, sport package
Quote:
Originally Posted by 645ciDream View Post
Spouting off when you don't know your stuff doesn't help anyone. Yes, what you were seeing was from the coolant leak. Yorgi thanks for the part/cost info and having my back.
I was talking about the rust and grim all over your pulley's. Your drive is caked bro.
__________________
Roads don't just have names. They have personalities.
Reply With Quote
  #15  
Old 04-25-2013, 10:44 PM
Yorgi's Avatar
Yorgi Yorgi is offline
Officially Welcomed to the 'Fest
Location: Toronto
 
Join Date: Mar 2005
Posts: 3,381
Mein Auto: '04 M3 / '06 650i Cab
Quote:
Originally Posted by soldier-ina-6er View Post
I was talking about the rust and grim all over your pulley's. Your drive is caked bro.
Seriously? Slamming a guy for having a rusty pulley bolt?
__________________
Straight lines are for fast cars...turns are for fast drivers
'04 M3 - track
'06 650i Cab - daily driver
'02 Highlander - kid hauler
'01 330Ci - winter beater

Reply With Quote
  #16  
Old 04-28-2013, 01:25 AM
645/333's Avatar
645/333 645/333 is offline
Michael
Location: uk
 
Join Date: Jun 2010
Posts: 1,160
Mein Auto: Black Sapphire BMW Z4 3L
Outside of painting that pulley bolt it is impossible to stop it rusting, even using acf50 and the like will have no effect!!!! It is the same for most unprotected bolts on the car!!!!!
__________________

Does my bum look good in this !
Reply With Quote
  #17  
Old 04-29-2013, 05:56 PM
blakedanatural blakedanatural is offline
Officially Welcomed to the 'Fest
Location: west chester,pa
 
Join Date: Jun 2010
Posts: 123
Mein Auto: 2005 645 ci convertible
Like everyone else mentions, check expansion tank, the hose that goes across the radiator and hopefully its not the coolant pipe. I had the same issue. Lucky for me it was the expansion tank and the mini hose that had a crack. I replaced both of them. I got the parts from bimmerzone.com.
Reply With Quote
  #18  
Old 10-13-2013, 11:26 PM
Chico 6series Chico 6series is offline
Registered User
Location: St. Louis, MO
 
Join Date: Jan 2013
Posts: 15
Mein Auto: 645Ci
Haven't been on here in a while. It was my expansion tank and I ended up having another smaill leak coming from a hose so the "dealer mechanic" said.
Reply With Quote
  #19  
Old 10-13-2013, 11:27 PM
Chico 6series Chico 6series is offline
Registered User
Location: St. Louis, MO
 
Join Date: Jan 2013
Posts: 15
Mein Auto: 645Ci
Just glad it wasn't the weep hole!
Reply With Quote
Reply

Bookmarks

Tags
6 series, 6 series (e63), 6 series 645i 645ci coupe


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 6 Series
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 08:26 AM.


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