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E90/E91/E92/E93 (2006 - 2013)
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  #1  
Old 12-30-2012, 02:17 PM
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MP3_E46 MP3_E46 is offline
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E93 Rain Drains

Likely this has been covered several times but Googling for "E93 Rain Drains" etc failed to find this information.

Today while carefully applying Gummi Pledge with a tiny paint brush to the windows seals etc I noticed what looked just like a rain drain. Running a trombone cleaner through it forced debris out the bottom. The first attached photo show debris from the first or second run through.

The first attachment definitely shows a drain that channels water down. With the roof up its top is clear to receive water and bottom exit hole drains outside the door.

From memory a little debris also came from the drain in the third attachment but I am not 100% certain. It does exit right where the main drain can receive water from it (shine flashlight in the corner of roof/ windshield pillar/ door window to see what I mean). There were lots of other similar holes but no debris came from any.

Additionally the seal at corners of the rear window base was in pretty bad shape for a vehicle manufactured in June 2009. Cleaning with a dry rag brought got some gunk off. Then I applied Gummi Pledge and re-cleaned with the rag; lots of nasty gunk came off. After re-applying Gummi Pledge it's now in much better shape. Silver trim underneath had corrosion like marks on which mostly cleaned off with a clay bar.

Everyone with an E93 should clean that drain and apply Gummi Pledge once in a while. Debris build up is obviously more likely if you park outside near trees.



Update: Wow! Within twenty minutes entering "E93 Rain Drains" in Google has this post and the number one hit.
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Last edited by MP3_E46; 12-30-2012 at 02:51 PM.
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  #2  
Old 12-30-2012, 03:41 PM
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fun2drive fun2drive is offline
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Good job.
I have not had need to clean my drains car is always garaged but might do so now just to see what comes out.
I never knew what a trombone cleaner looks like but now I do...
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  #3  
Old 12-30-2012, 03:50 PM
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Nordic_Kat Nordic_Kat is offline
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MP3,

Excellent information here. I've squirted water from a syringe down the rain drains a couple of times, just to make sure they were properly draining. Looks like your top seals are definitely in need of some extra TLC, but you are well on your way to getting them rejuvenated.

If you don't mind, please post a reference to this thread up in the origami top sticky. That way in the future this information will be easily accessible if someone is perusing the sticky.

Thanks!
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  #4  
Old 12-30-2012, 06:04 PM
anE934fun anE934fun is offline
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Quote:
Originally Posted by MP3_E46 View Post
Likely this has been covered several times but Googling for "E93 Rain Drains" etc failed to find this information.

Today while carefully applying Gummi Pledge with a tiny paint brush to the windows seals etc I noticed what looked just like a rain drain. Running a trombone cleaner through it forced debris out the bottom. The first attached photo show debris from the first or second run through.

The first attachment definitely shows a drain that channels water down. With the roof up its top is clear to receive water and bottom exit hole drains outside the door.

From memory a little debris also came from the drain in the third attachment but I am not 100% certain. It does exit right where the main drain can receive water from it (shine flashlight in the corner of roof/ windshield pillar/ door window to see what I mean). There were lots of other similar holes but no debris came from any.

Additionally the seal at corners of the rear window base was in pretty bad shape for a vehicle manufactured in June 2009. Cleaning with a dry rag brought got some gunk off. Then I applied Gummi Pledge and re-cleaned with the rag; lots of nasty gunk came off. After re-applying Gummi Pledge it's now in much better shape. Silver trim underneath had corrosion like marks on which mostly cleaned off with a clay bar.

Everyone with an E93 should clean that drain and apply Gummi Pledge once in a while. Debris build up is obviously more likely if you park outside near trees.



Update: Wow! Within twenty minutes entering "E93 Rain Drains" in Google has this post and the number one hit.
That is an interesting idea. I was wondering how to apply Gummi upside down. Out of curiosity, what width paint brush are you using? If I understand your technique, you are basically 'painting' the seal with Gummi, using the paint brush?
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  #5  
Old 12-30-2012, 06:54 PM
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MP3_E46 MP3_E46 is offline
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Quote:
Originally Posted by anE934fun View Post
That is an interesting idea. I was wondering how to apply Gummi upside down. Out of curiosity, what width paint brush are you using? If I understand your technique, you are basically 'painting' the seal with Gummi, using the paint brush?
Painted it on then rubbed with fingers to ensure it reached everywhere - hope it's ok on skin

Have never gone to this extreme before but I would like to get this car sorted out. Could easily swap it out for a new G37 or IS convertible but I hugely prefer the E93.

The brush I used was very small (one you'd use to paint a water color background with). Next time at the Home Depot I'll pick up a suitable 1/4" brush which should work faster even if it splashes more. Be sure to cover seats with towels, I draped towels under the seals but the rear seats ended up with a few splodges. Lexol a couple of hours later appears to have removed the marks Gummi Pledge made on the black leather. Also I need something to keep the Gummi Pledge in now as it the original container does not work well once the foam applicator is removed. Never like that applicator and from now on will use with a paint brush.
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  #6  
Old 04-25-2013, 03:28 AM
Submariner Submariner is offline
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FYI

Trombone cleaner : Amazon link
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  #7  
Old 04-25-2013, 04:15 AM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by MP3_E46 View Post
Today while carefully applying Gummi Pledge with a tiny paint brush to the windows seals etc I noticed what looked just like a rain drain. Running a trombone cleaner through it forced debris out the bottom. The first attached photo show debris from the first or second run through.

Thanks for this MP3_E46.

I recall at least one thread about the channel, but not in this detail or with this resolution. Had something to do with filling the channel with silicone to resolve foldin' top leakage - firmer seal. Flexy silicone rod....??

Good juju, text of cleaning & trombone brush - what I don't recall is any good way to clean it. Before this.


.

Last edited by CALWATERBOY; 04-25-2013 at 04:18 AM.
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  #8  
Old 04-28-2013, 04:21 PM
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MP3_E46 MP3_E46 is offline
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Quote:
Originally Posted by CALWATERBOY View Post
Thanks for this MP3_E46.

I recall at least one thread about the channel, but not in this detail or with this resolution. Had something to do with filling the channel with silicone to resolve foldin' top leakage - firmer seal. Flexy silicone rod....??

Good juju, text of cleaning & trombone brush - what I don't recall is any good way to clean it. Before this.


.
Thanks Cal. We've had no leaks at all since cleaning out the drains. In fact the car has been problem free for over three months now
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  #9  
Old 06-10-2015, 02:04 AM
Ichitakap Ichitakap is offline
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it part. NO. 31

Last edited by Ichitakap; 06-10-2015 at 02:07 AM.
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  #10  
Old 09-22-2015, 10:48 AM
dgcamero dgcamero is offline
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Quote:
Originally Posted by Ichitakap View Post
it part. NO. 31
By any chance, does anyone know how far down this piece is supposed to go? I pushed them out unclogging the drains on my sister in law's...

I appreciate any help!
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  #11  
Old 09-22-2015, 11:14 AM
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Quote:
Originally Posted by dgcamero View Post
By any chance, does anyone know how far down this piece is supposed to go? I pushed them out unclogging the drains on my sister in law's...

I appreciate any help!
Did you try comparing with the other side?
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Old 09-22-2015, 11:33 AM
dgcamero dgcamero is offline
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Quote:
Originally Posted by MP3_E46 View Post
Did you try comparing with the other side?
Sadly I'd pushed them both through by the time I realized they're actually supposed to be there. I assumed they were what was blocking the channels!
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  #13  
Old 09-23-2015, 08:25 AM
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Quote:
Originally Posted by dgcamero View Post
Sadly I'd pushed them both through by the time I realized they're actually supposed to be there. I assumed they were what was blocking the channels!
Ooops!
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  #14  
Old 06-10-2015, 02:04 AM
Ichitakap Ichitakap is offline
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I had some water leak problem so i did some searching and see this post.
very useful and i tried to clean the rain drain as well, however i pushed something out and did another search again.

it is the form rubber, anyone know what's this for? should i put back in?

http://bmwfans.info/parts-catalog/E9..._grille_seals/
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Old 06-10-2015, 08:25 AM
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fun2drive fun2drive is offline
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Holds the form of the rubber trim piece so that it will not collapse.
Put it back in place to keep from getting a leak in that area.
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Old 06-10-2015, 11:36 PM
Ichitakap Ichitakap is offline
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thanks!

then in this case, when i put back in, isnt it will block the rain drains?
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  #17  
Old 09-22-2015, 10:58 AM
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Perfect timing on this thread. I had a small leak during the recent rains in Southern California. I keep my seals clean and gummied, but I was thinking it might be from a blocked rain channel. My leak is right where the roof, door and windshield meet above the driver. Now I know what to check.
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Old 09-22-2015, 11:17 AM
dgcamero dgcamero is offline
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Originally Posted by Krynos View Post
Perfect timing on this thread. I had a small leak during the recent rains in Southern California. I keep my seals clean and gummied, but I was thinking it might be from a blocked rain channel. My leak is right where the roof, door and windshield meet above the driver. Now I know what to check.
Just a note, I pushed the rubber piece through the drains with my fingers, and blew the drains out and that cleared them, there was a massive amount of crud, so be sure you have something to catch it with...I just hope I've put the rubber pieces in the right spot. I used some Krytox (VW Eos roof seal lube) cuz I have some laying around to push them back in, and a mini blind's tilt adjuster plastic piece to push it back in.
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Old 09-22-2015, 11:17 AM
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Good info to have. N4S
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  #20  
Old 09-22-2015, 11:18 AM
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MP3_E46 MP3_E46 is offline
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Quote:
Originally Posted by Krynos View Post
Perfect timing on this thread. I had a small leak during the recent rains in Southern California. I keep my seals clean and gummied, but I was thinking it might be from a blocked rain channel. My leak is right where the roof, door and windshield meet above the driver. Now I know what to check.
If it helped I am the OP. It's been three years since I posted this and we still have very small leaks from where you describe. Very rare too.. the only time I've seen them in ~six months is in (touchless) car washes during the final rinse cycle and they are very minor.

When the rains drains were clogged the leaks were significant, with water surging in on the driver's side during acceleration.
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Old 09-25-2015, 10:52 AM
328iblack 328iblack is offline
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To apply the sealant, try using a latex glove , put a little in your finger and apply. I have never tried to use a brush , but the latex glove/ finger approach works great!!
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  #22  
Old 04-10-2016, 05:03 PM
vettemedx vettemedx is offline
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I had a leak as well where the windshield meets the door and roof. I pushed the rubber piece through and a ton of mud came out with it. How does the drain empty with this in place. I can put it back, but feel like the drain will just clog again. Anyone can shed some light on this?
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  #23  
Old 04-10-2016, 05:10 PM
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You should post a photo.

The drain I showed in the first picture was unclogged ~3.5 years ago and never clogged again, but kept it in a garage and I tried never to park under trees etc.

In the worst of Atlanta's storms we'd get the odd drip enter the cabin, but in Denver nothing whatsoever. 'Heavy' rainstorms are almost nothing here compared to Atlanta.
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Old 04-10-2016, 05:13 PM
vettemedx vettemedx is offline
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I will upload them. The first pic you posted is what it looked like after i pushed the little rubber piece through. It's the same one pictured a few replies up. Are there none in your drains??
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  #25  
Old 04-10-2016, 05:17 PM
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In this pic there should just be a hole where the trombone cleaner is pushed through. It's where water drains. Mine was full of all sorts of gunk:

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