Mo Reviews
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read

Go Back   BMW M3 and BMW M4 Forum > BMW F80 M3 / F82 M4 Forum > BMW M3 (F80) and BMW M4 (F82) General Forum

Post Reply
 
Thread Tools Search this Thread
      11-24-2021, 01:44 PM   #1
Dazoreilly
New Member
7
Rep
19
Posts

Drives: BMW M4
Join Date: Mar 2020
Location: Leicester

iTrader: (0)

Water leak from back box

2017 m4, water dripping from the middle of my back box

The wife noticed a massive wet patch earlier

Is this a common problem?

I’m guessing the back box has split/cracked
Appreciate 0
      11-24-2021, 03:23 PM   #2
mapster37
Captain
mapster37's Avatar
United_States
351
Rep
909
Posts

Drives: F80
Join Date: Sep 2018
Location: Davie

iTrader: (2)

pictures would be great. so we can fully understand what black box you are referring to
Appreciate 0
      11-24-2021, 03:52 PM   #3
spidy512
Captain
United_States
492
Rep
687
Posts

Drives: 2015 f80 M3
Join Date: Oct 2016
Location: East Bay Area, CA

iTrader: (0)

Garage List
2015 BMW M3  [0.00]
Also,

Just to make sure, it is water? not gasoline right?

I have seen a few gas tanks need to be replaced around here, just thought I'd mention it....

Otherwise, is it in the mornings? during warm up? Echoing above, all the info you can spare...

josh
Appreciate 0
      11-24-2021, 04:19 PM   #4
swagon
Major General
swagon's Avatar
No_Country
13478
Rep
8,143
Posts

Drives: F80 6MT
Join Date: Jun 2013
Location: .

iTrader: (0)

Quote:
Originally Posted by mapster37 View Post
pictures would be great. so we can fully understand what black box you are referring to
Back box aka rear exhaust muffler

British English
__________________
Appreciate 0
      11-25-2021, 03:50 PM   #5
Dazoreilly
New Member
7
Rep
19
Posts

Drives: BMW M4
Join Date: Mar 2020
Location: Leicester

iTrader: (0)

Quote:
Originally Posted by spidy512 View Post
Also,

Just to make sure, it is water? not gasoline right?

I have seen a few gas tanks need to be replaced around here, just thought I'd mention it....

Otherwise, is it in the mornings? during warm up? Echoing above, all the info you can spare...

josh
It’s definitely water

It’s at all times of day, at work today I had a patch about 300mm.

I need to get under there and have a good look really
Appreciate 1
spidy512491.50
      11-26-2021, 02:03 PM   #6
mapster37
Captain
mapster37's Avatar
United_States
351
Rep
909
Posts

Drives: F80
Join Date: Sep 2018
Location: Davie

iTrader: (2)

Quote:
Originally Posted by swagon View Post
Quote:
Originally Posted by mapster37 View Post
pictures would be great. so we can fully understand what black box you are referring to
Back box aka rear exhaust muffler

British English
ill have to catch up on my British English...
pictures of the issue at hand would be great.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off



All times are GMT -5. The time now is 11:27 PM.




f80post
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST