Results 1 to 3 of 3

Thread: Coolant pipe leak

  1. #1
    Join Date
    Nov 2016
    Location
    New York
    Posts
    12
    My Cars
    645ci

    Coolant pipe leak

    Hi all, 2 months ago the water pump on my 05 645ci went out so i replaced it. Along with the water pump i put on a new water pump feed pipe (the small black pipe leading from the top of the water pump to the top of the valley pan right under the throttle body) all was good until a couple of days ago when i got a low coolant light. Upon inspection i have isolated the leak to the water pump feed pipe that i just replaced. I have no problem replacing this, but my concern is that this leak from a brand new pipe is indicative of a larger issue, i.e. the infamous coolant transfer pipe issue.

    Any thoughts?

  2. #2
    Join Date
    Jan 2007
    Location
    .
    Posts
    7,708
    My Cars
    .
    Was it an OEM part? Seems unlikely it would leak unless you did something wrong. Are you sure that's where the leak is coming from? Seems more likely it would be the valley pan itself or maybe the transfer pipe. When the pipe leaks, coolant comes out of the weep hole on the front of the water pump.

    Sent from my Pixel XL using Tapatalk
    ASE and BMW Master Certified Technician

  3. #3
    Join Date
    Jan 2016
    Location
    Ca
    Posts
    6,981
    My Cars
    2001 525it
    If your coolant pipe was leaking you'd see it out of the weep hole as mentioned above

Similar Threads

  1. Proper performance BMW coolant pipe leak
    By 650icoolantpipe in forum General BMW and Automotive Discussion sponsored by Intercity Lines
    Replies: 0
    Last Post: 07-27-2015, 10:56 PM
  2. Coolant pipe failure, leak from weep hole
    By 528canyonrot in forum 2004-2010 (E60,E61)
    Replies: 1
    Last Post: 04-11-2013, 06:25 PM
  3. Coolant return pipe leak
    By estoguy in forum 1983 - 1991 (E30)
    Replies: 5
    Last Post: 01-26-2013, 08:01 PM
  4. coolant pipes leaking, remove intake manifold?
    By cycojon in forum 1996 - 2003 (E39)
    Replies: 3
    Last Post: 12-19-2010, 10:55 AM
  5. Newb with a q. Coolant pipe leak issue on 4.4L V8???
    By GreatDane001 in forum 2004-2010 (E60,E61)
    Replies: 0
    Last Post: 06-26-2009, 03:27 PM

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
  •