[W126 Coupe] Water in floor behind drivers back seat

[Barry Corno]

Dick,
   Thanks I will go to work on all of these things.
On the side window brush, it is new and we have poured
Water directly down the back side window to find out if the 
Drains in that panel were plugged. Water ran right out on to
The floor.

B.C. 
www.duckdelivery.com


Barry K. Corno
 
(503) 288-9380
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-----Original Message-----
From: mbcoupes-bounces at mbcoupes.com
[mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of Dick Spellman
Sent: Friday, November 23, 2007 8:26 AM
To: Mercedes Coupes Mailing Lists
Subject: Re: [W126 Coupe] Water in floor behind drivers back seat

Hi Barry:

Reading your posts it looks as if you have covered all the usual 
suspects and this includes checking under the rear coupe seat cushions 
which are dry.

I am wondering if your side coupe window brush is leaking.  Perhaps you 
can flood the rear side coupe window for a period of time as the water 
will take some time to travel to the interior from wherever the leak is 
located.   This is a costly one-piece unit that wraps around the outer 
side glass is joined at the door pillar and is attached to the inner 
window brush that runs inside.  By the way I have never seen a leak from

the window brush area but, I've never worked on an SEC or MB with the 
kinds of mileage you have racked up.

As another test of sorts, I would lift the door sill plastic out of the 
car and place a piece of paper towel up near the carpet cut-off and 
close to the jam then run a strong stream of water along just the window

glass and door area (no roof) to see if the paper towel gets wet.  If 
yes, you have at least narrowed the leak to the door jam seal where the 
front door glass bead meets the rear glass seal.

If no, I would also take a paper towel and fit it into the rear foot 
well heater duct (this is under the driver's seat).  Then run a strong 
stream of water for some time about dead center on the windscreen/wiper 
motor fascia.  Then check to see if the paper towel in the duct gets wet

or if the carpet becomes wet in the rear area as you typically see.  In 
these two tests you are checking to see if the front wiper pan drains 
and the center drain are either plugged or if the inner firewall has 
developed a leak from rust.  The water can be carried through the heater

box out onto the floor area under the driver's carpet and may not be 
noticed due to the heavy insulated backing under the front carpet.  
Again, allow a few minutes to see if the leak appears.

Maybe worth another check even though you  have done this or had someone

do it.  With sunroof open, be certain an extension wand on an air 
compressor is used to get right into the a-pillar corners and that you 
do in fact hear the air escaping behind the front wheel cavity inner 
plastic trim.  If you hear air escaping down low on the inner wheel well

you are all set.  If no air escapes down there, one or both drains are 
really plugged solid.  Let me know how you fare in these few tests.

Dick

Barry Corno wrote:

> Dick,

>     Thanks for the response.

> Only after a hard rain. The car has to be sitting. If in motion

> no water comes in. Car washes are O.K. no water then.

>     It is not the air condition, as I mentioned the drain is unplug

> and water does not come from any part of the front of the car.

>  

> B.C.

>

> ________________________________

>

> From: mbcoupes-bounces at mbcoupes.com on behalf of Dick Spellman

> Sent: Thu 11/22/2007 1:09 PM

> To: Mercedes Coupes Mailing Lists

> Subject: Re: [W126 Coupe] Water in floor behind drivers back seat

>

>

>

> Barry Corno wrote:

>   

>> I have been looking for how water is getting into back floor behind

>> drivers seat for a few years. Here is what I have replaced so far.

>>       1. Check air condition drain [ not plug ]

>>       2. front window not leaking [ water is not coming from front of

car]

>>       3. Replaced drivers door seal.

>>       4. Replaced felt strip attached to real window.

>>       5. Checked back panel window drains in car body. [ not plug ]

>>       6. New rear window seal. [ no water in truck ]

>>       7. Sunroof drains not plug. [ plus all new seals in sun roof ]

>>       8. Drivers door drains not plug.

>> Any other ideas??????????????

>>

>> B.C "83" 380 SEC AMG  /// 531.4 K

>>

------------------------------------------------------------------------

>>

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>> Postings remain property of MB Coupes, L.L.C.

>>     

> Hi Barry:

>

> When does this water situation occur?  After a good rain or car wash?

> Only when AC has been operating?

>

> Regards,

> Dick

>   

>


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