Notices
 
 

  

User Tag List

Thread: BKD Touran losing coolant - where to?

Results 1 to 2 of 2
  1. BKD Touran losing coolant - where to? 
    #1
    Join Date
    Apr 2014
    Location
    SW London / Surrey
    Posts
    1,205
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    168 Post(s)
    Our MY08 BKD engine Touran has started losing quite a bit of coolant regularly, but not all the time. On some short-ish (20 mile) trips the coolant light comes on, and the level is well below minimum. On others it doesn't.

    I built a little widget to pressure test the system. Turns out a 40mm plumbing waste compression fitting goes quite nicely on the expansion tank with the lid removed, and a 7/32" hole is perfect for screwing a long Presta valve from a donor cycle inner tube into. The part I had around happened to be a tee-joint, but only two connections are needed so a coupler would be fine.

    20220723_183824.jpg

    I can get the pressure up to ~1.5 Bar easily, and it holds for 20 minutes. Big "pop" if I pull it off rather than release pressure steadily.

    No sign of coolant around engine while doing this. Oil is a lovely, silky black. C-suffix cylinder head. Exhaust is generally clear with odd puffs of blackness when accelerating hard.

    Only clue is that sometimes when reversing off of drive a trail of water is left, as though it had gathered on plastic undertray and sloshed off as car moved. Now parking over a sheet of cardboard with tray removed, but no drips seen so far.

    I'm not aware of any valves that let water into parts of system sometimes, but make a water-tight isolation of it at others. I'm wondering if there could be a hairline fracture in something that opens up when car is doing some particular thing, but is pressure tight at others.

    Any pointers from anyone?
    ======

    Did this forum help you today? Help make sure it's here next time as well. Just click here to make a suitable donation using PayPal .
     
    0 0 0
     

  2. Re: BKD Touran losing coolant - where to? 
    #2
    Join Date
    Apr 2014
    Location
    SW London / Surrey
    Posts
    1,205
    Post Thanks / Like
    Mentioned
    10 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    168 Post(s)
    Further reading is suggesting hairline cracks in radiator. I'll see if I can see anything there.
    ======

    Did this forum help you today? Help make sure it's here next time as well. Just click here to make a suitable donation using PayPal .
     
    0 0 0
     

Similar Threads

  1. 55 1.9tdi 105 touran losing coolant, heaters not working and engine fan
    By rossyjr in forum Touran - Sharan - Caravelle
    Replies: 1
    Last Post: 22-02-2017, 09:57 PM
  2. A6 1.9 TDI losing coolant
    By Rudidudi in forum Audi A6 - C5 Forum - 1998 - 2004
    Replies: 69
    Last Post: 21-12-2015, 01:52 PM
  3. Losing coolant
    By Cannondave in forum Passat - B6 Forum - 2005 - 2010
    Replies: 1
    Last Post: 07-01-2015, 09:39 AM
  4. touran losing coolant
    By angnlee in forum Touran - Sharan - Caravelle
    Replies: 10
    Last Post: 17-10-2013, 05:21 PM
  5. I'm losing coolant :(
    By njek in forum Passat - B5 Forum - 1997 -2005
    Replies: 20
    Last Post: 05-04-2010, 03:12 PM
Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  


 



  


Disclaimer: VW Audi Forum is an "independant enthusiast website", administered in line with guidelines supplied by VAG in the UK, and is in no way related to any of the Worldwide Volkswagen,Audi,Seat,Skoda,Bentley,Bugatti,Porsche or Lamborghini group of Companies. For official up to date information on any of there vehicles, please visit the official websites. Any comments made throughout this website, are the views of the respective poster, and in no way represent the views of the VW Audi Forum Administration, or the worldwide Volkswagen & Audi Group of companies.


VW Audi Forum do not vet and are not responsible for any information which is posted in this forum. All content is viewed and used by you at your own risk and we do not warrant the accuracy or reliability of any of the information.


Copyright: Certain "words", "phrases" and "Images" used on this website by the Administration are "Copyright" of Volkswagen GB, Volkswagen AG (Germany), Audi GB, Audi AG (Germany), Volkswagen Motorsport GB, Volkswagen Motorsport AG (Germany), Audi Motorsport AG (Germany), Volkswagen Racing GB, Bentley, Bugatti, Porsche and Lamborghini. No image can be replicated by anyone WITHOUT the relevant Companies written permission.


All trademarks and copyrights remain property of their respective owners.

No part of the VW Audi Forum website or forum may be reproduced without written permission from the site administration


PLEASE NOTE - PERSONAL ABUSE, ABUSE AGAINST THIS OR ANY OTHER WEBSITE OR ANY COMPANY WILL NOT BE TOLERATED. OFFENDERS WILL BE MODERATED OR EVEN BANNED.


This website and forum are best viewed at a minimum resolution of 1024 by 768.



  



- VW AUDI Forum - The #1 Volkswagen (VW) Group Forum - Volkswagen (VW) - Audi - Seat - Skoda - Bentley - Bugatti - Lamborghini - Porsche - Scania - MAN - Ducatti - VW Audi Forum -


- www.vwaudiforum.co.uk - www.vwaudiforum.co.uk -