Common Water Leak Source on Z3 Apilar Seal?? - Page 3 - Bimmerfest - BMW Forums



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  #51  
Old 02-03-2014, 02:24 PM
Blimey Blimey is offline
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leaks

Great advise - solved the problem.
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  #52  
Old 05-02-2014, 03:32 PM
Slow Z Slow Z is offline
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Originally Posted by v8 power View Post
Thank you guys for your replys,thats the A pillers done,the third brake light done,door membraines done As the carprts are also wet up behind the seats does Anybody know what can done in the rear deck area ,what should i look out for,thanks
I found water in my trunk and it turned out that the grommet around the antenna had deteriorated and let water leak in.

Anybody know of source for replacements? OTHER than Break My Wallet!

BTW my service guy couldn't/didn't try to fix my A-piller leak. He said that the Fields BMW stealership now wants almost $800 for the two seals.
PS that was the price as of yesterday (May 1, 2014).
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  #53  
Old 05-02-2014, 07:29 PM
Blimey Blimey is offline
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Antenna grommet

I actually got one last year from the dealer for less than $10.00 - quite the deal.

Thanks for the other answers.
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  #54  
Old 05-02-2014, 08:30 PM
dkindig dkindig is offline
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Originally Posted by Slow Z View Post
I found water in my trunk and it turned out that the grommet around the antenna had deteriorated and let water leak in.

Anybody know of source for replacements? OTHER than Break My Wallet!
Part number 65218411562, thebmwpartstore.com, $6.19, and generally stuff like that they will ship in an envelope via first-class mail so the shipping won't kill you either.
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  #55  
Old 09-09-2015, 10:38 PM
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Heavy down pour here in Austin, Texas and I'm having this particular leak problem with my A Pillar on both sides. Gonna get some silicone try to fix it. Thanks for the help everyone! Hopefully this works.
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  #56  
Old 09-16-2015, 10:49 AM
ALM168 ALM168 is offline
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Leaks - A pillar

Are the plugs in the A pilar recessed or are do they sit proud of the A pilar rubber mount?


Al

Last edited by ALM168; 09-16-2015 at 10:53 AM. Reason: spelling
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  #57  
Old 09-16-2015, 10:50 AM
ALM168 ALM168 is offline
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Leaks - A pilar

Are the plugs in the A pillar recessed or are do they sit proud of the A pillar rubber mount?


Al

Last edited by ALM168; 09-16-2015 at 10:55 AM.
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  #58  
Old 09-16-2015, 11:10 AM
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Originally Posted by ALM168 View Post
Are the plugs in the A pillar recessed or are do they sit proud of the A pillar rubber mount?


Al
The plugs are flush in the a-pillar. It seems that the glue attaching the plug to the a-pillar separates after time. When the front water way channel that goes across the windshield fills ups, they can leak. I'm still waiting on my silicone glue in the mail to do the fix.
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  #59  
Old 09-16-2015, 06:51 PM
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The plug takes water from the channel in the gasket across the top of the windshield, and directs it down inside the gasket on the A-pillar, to discharge on the door sill and out.
The gasket is continuous from the bottom of one door up the A-pillar, across the windshield and down the other A-pillar to the bottom of the other door. The long rubber gasket has a gutter across the top and a passage or tube down inside each leg. One person called the whole gasket an "aqueduct".
Click on Images to see all the views here:
http://www.ecstuning.com/Search/51718410169/ES130255/

The plugs are part of the water path. Their purpose may be to allow cleaning of the passages down the two side legs that go down the A-pillar.
Note the channel on the side of the plug in this post:
https://www.bimmerfest.com/forums/sho...4&postcount=49
You want a little silicone to seal the top of the plug, but you should not fill the channel down the plug with silicone, and you want to be sure the channels inside the A-pillar gaskets are clear.

Last edited by vintage42; 09-17-2015 at 03:18 AM.
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  #60  
Old 11-19-2015, 04:35 PM
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It worked for me! Finally had some strong rain the last couple of weeks and its dry now.
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  #61  
Old 05-25-2016, 09:21 AM
WiscZ3 WiscZ3 is offline
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Glue or silicone sealer

THANK YOU for this post. I know it's old, but i've been searching for this answer for years. Question...would a silicone sealer work better (or as well) as Guerrilla Glue??
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  #62  
Old 05-25-2016, 09:56 AM
BK85 BK85 is offline
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Originally Posted by WiscZ3 View Post
THANK YOU for this post. I know it's old, but i've been searching for this answer for years. Question...would a silicone sealer work better (or as well) as Guerrilla Glue??
I use some stuff from the parts store called goop it's a clear silicone and it has been dry ever since
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  #63  
Old 05-25-2016, 10:02 AM
khammack khammack is offline
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Originally Posted by WiscZ3 View Post
THANK YOU for this post. I know it's old, but i've been searching for this answer for years. Question...would a silicone sealer work better (or as well) as Guerrilla Glue??
I don't know much about the staying power of Guerrilla Glue, but I used silicone about 10 years ago and it is still working.
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  #64  
Old 05-25-2016, 12:16 PM
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Let me find the silicone I used and I'll post a picture of it. I'll also do a picture of where I put the silicone on the A-Pillar. Hopefully sometime later today. Stay tuned.
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  #65  
Old 05-25-2016, 12:31 PM
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Originally Posted by WiscZ3 View Post
... would a silicone sealer work better (or as well) as Guerrilla Glue??
The rubber plug is removable if needed, and has a water channel down its side. Guerrilla Glue is the worst possible choice here, as it is supposedly very strong, and also expands. If it works as claimed, it might obstruct the drainage channel in the side of the plug. And then trying to remove the plug might harm the $350 rubber seal that holds it.
A little black silicone wiped sparingly on the plug before insertion, and a skim coat of the silicone across the top of the plug, should work better.
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  #66  
Old 01-01-2018, 12:12 PM
Mike Z3 Mike Z3 is offline
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Sarah did a great job of explaining the cure and fix for those dreaded window and door leaks most stemming from the A Pillar poor rubber design. I glued both sides, with Gorilla glue, just to be safe although only my passenger side was leaking. After 3-4 pretty good rains, traveling at 50++ miles per hour....no leaks and dry as a bone.
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  #67  
Old 01-01-2018, 01:41 PM
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Originally Posted by Mike Z3 View Post
Sarah did a great job of explaining the cure and fix for those dreaded window and door leaks most stemming from the A Pillar poor rubber design. I glued both sides, with Gorilla glue...
The rubber plug needs to pass water down a groove in its side, and also be removable for cleaning this groove and the drain passage that continues down inside the A-pillar gasket.
For this reason, a little bit of silicone only on top of the plug is preferred. The disadvantages of Gorilla Glue are that it expands and can close the groove, and it could be strong enough to prevent removal of the plug.

Last edited by vintage42; 01-01-2018 at 01:42 PM.
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  #68  
Old 01-01-2018, 02:21 PM
Mike Z3 Mike Z3 is offline
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Sarah could not explain it any better. It is typically the Apillar plug, needing more glue to seal it.
My passenger side was leaking badly in my Z3, the driver side on occasion. I glued both sides with gorilla glue, just to be safe. Adding glue around the triangular plug that often leaks. After 2-3 rides in heavy rain, at 50++ mph....dry as a bone...NO WATER OR LEAKS!!

Last edited by Mike Z3; 01-01-2018 at 02:23 PM. Reason: typo
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  #69  
Old 01-01-2018, 02:53 PM
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Originally Posted by Mike Z3 View Post
Sarah could not explain it any better. It is typically the Apillar plug, needing more glue to seal it...
Yes, Sarah was entirely correct, but she did not do what you did. From this post, the expanding Gorilla Glue could seal up the drainage groove in the side of the plug, and prevent the plug from being removed to clean out the drain below it.
https://www.bimmerfest.com/forums/sho...4&postcount=49

The plug is not what it seems to be. It is part of a conduit that takes water from the channel in the gasket across the top of the windshield, and directs it down inside the gasket on the A-pillar, to discharge on the door sill and out.
The gasket is continuous from the bottom of one door up the A-pillar, across the windshield and down the other A-pillar to the bottom of the other door. The long rubber gasket has a gutter across the top and a passage or tube down inside each leg. One person called the whole gasket an "aqueduct". The channeled plug is part of this system.
Click on Images to see all the views here:
http://www.ecstuning.com/Search/51718410169/ES130255/

Last edited by vintage42; 01-01-2018 at 02:57 PM.
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  #70  
Old 01-01-2018, 04:12 PM
Mike Z3 Mike Z3 is offline
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Super important to get glue around that triangular A Pillar...as if you do not water will leak down window and into the cabin. There is already a channel or water duct to bring the run off water down the aqueduct and into the drainage channel and out the bottom of door. Use glue, silicone or anything that will seal the A Pillar...it is necessary to make it water tight. This process has worked well for me, and my Z3 owner friends.

Enjoy staying dry in the best roadster ever made, the classic Z3.
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  #71  
Old 01-01-2018, 04:16 PM
Mike Z3 Mike Z3 is offline
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Just make sure the glue is water tight on A Pillar triangular plug....it is important to keep this water tight. Don't worry about run off not getting thru....there is a different water channel very nearby that takes remaining run off water and channels it down to the run out spout under the door. Stay dry, in the best roadster ever made...bmw z3....its a classic.

Last edited by Mike Z3; 01-01-2018 at 04:21 PM. Reason: typo
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  #72  
Old 01-01-2018, 04:18 PM
Mike Z3 Mike Z3 is offline
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She actually did. Used glue. Dont worry about it being water tight. there is a run off drain nearby, that takes the runoff water down a aqueduct channel and deposits it out the bottom of the door. No worries....glue or silicone...just make sure its water tight. Stay dry in the best roadster ever produced....bmw Z3.
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  #73  
Old 01-01-2018, 04:42 PM
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Originally Posted by Mike Z3 View Post
... There is already a channel or water duct to bring the run off water down the aqueduct and into the drainage channel and out the bottom of door..
Do you think that the plug channels water through the groove in its side, as part of that aqueduct carrying water from the top of the windshield to the bottom of the door sill?

Or does the water from the top of the windshield make the turn below the plug? In which case the plug is not part of the water path, and is merely there to access the channel down the A-pillar to clean it out with a wire if it gets plugged.

But then why would the plug have that groove or channel down its side?
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Last edited by vintage42; 01-01-2018 at 04:53 PM.
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  #74  
Old 01-02-2018, 12:52 PM
Mike Z3 Mike Z3 is offline
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Originally Posted by FastWoman View Post
Hi all,

Some of you were so kind as to help me with a leak problem at the A*****ar seal on my 2001 Roadster. The possibility was raised that the rubber had shrunken and needed to be restored with Gummi-Phlege (sp?) or something similar. I did that, with only modest improvement in the situation. Then I followed another recommendation of tightening the roof latch. That apeared to "fix" the problem, at least for the moment.

Then I got my new/used hardtop and fitted it to the car. I got slow leaks at the A*****ar seals on both sides. This time, I KNEW that I had good, tight contact between the rubber on both sides, so the problem had to lie elsewhere.

When looking at the problem further, I discovered the problem. I'm thinking it's got to be a problem on other cars too -- probably even a common one.

If you look at the A-pillar seal on the windshield side, it looks like this...



See the almost triangular-shaped rubber recess in the middle of the thing? That's actually a rubber plug. Take note of it.

Now look at the top side of the seal. In this picture, notice the rain groove, just forward of the seal above the windshield. It communicates with a recess in the A*****ar rubber. An overflow (?) hole exists just next to it. You can put a probe in one hole and see it through the other hole...



These holes both connect to the interior of the weather stripping in the door jamb, such that water flowing into these holes flows around the door and exits through weep holes in the weather stripping in the step plate area...


(pardon the focus)

Now, look back up at the rubber semi-triangular plug. That's what stands between the convoluted aquaduct system and the A-pillar seal.

This is the other side of the A-pillar seal (on a hardtop)...



Note that if the water gets past the plug, there is nothing to keep it from flowing into the interior of the car. In fact it is actually diverted in that direction.

AND HERE IS THE PROBLEM...



The glue/adhesive fastening the plug in the hole had given way, allowing the water to leak from the grand aquaduct, into the A-pillar seal, and ultimately into the interior of the car. I was able to verify that water came out from around the plug when I poured water through the drainage hole on the outside of the car. And yes, this had happened on both sides of the car. (Please note: I verified the leak before actually poking anything into this area!!)

Exploring further, I poked a screwdriver into the hole and found that the adhesive came apart VERY easily all the way around -- again, on both sides of the car. So I applied an adhesive to the gap between the plug and the surrounding rubber. It's curing tonight. I can only presume this will solve my leakage problem.

I *think* that may also solve the leakage problem of at least one other list member as well -- new ragtop, new leak. I think the leak can show up when a different amount of compression on the seal causes the gap between the plug and surrounding rubber to open up.

I hope that helps a few other folks!

Peace,
Sarah
No better explanation....has worked great for me and stopped my annoying leaks, that started with the triangular A Pillars needing more glue. Make sure you get some good glue all the way around the triangular piece. Do not worry about stopping the flow of any runoff water. The channel nearby (quarter inch away) is actually the channel that water runs downward in and is deposited at the bottom exterior of your door. Thanks to Sarah...a huge win for all you out there dealing with slight water leaks above your windshield.
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  #75  
Old 01-02-2018, 01:00 PM
Mike Z3 Mike Z3 is offline
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Originally Posted by FastWoman View Post
You're quite welcome!

Any other leaks out there?

Randy, these are just "out of the camera" snapshots -- wide open at ASA 3200, and into JPEG format. I'm using a very nice lens (Canon EF 17-70 f/4L), but the camera settings I used almost guarantee awful photos. I need the high ASA because I'm shooting black parts in a dim garage. I could use flash, of course, but then there are weird shadows and reflections, making the photos unclear. Besides that, the lens is so huge, it's hard to use flash for anything at such close range. (The lens casts a shadow.)

Peace,
Sarah
Sarah - the best diy fix idea posted in a long while! Thank you! Just get some good glue in around that triangular piece...it will stop the inside water leaks and keep your cabin dry as a bone in a driving rain storm! Don't worry about stopping rain runoff...the little channel port right next to it, about a quarter inch away, is actually the runoff port which takes rain water downward and deposits it on the outside of car below door. Great diy fix that should help hundreds of others with small inside leaks.
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