Rain leak on driver’s side
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- cornwallis
- Posts: 35
- Joined: Sat Nov 28, 2015 11:12 pm
- Location: Houston, Texas
Rain leak on driver’s side
We’ve had lots of rain lately. Car was outside during rainstorms for 3-4 days, didn’t move. Found a lot of rain water came in at drivers side - the carpet under pedals was soaked. I’ve never had this issue before.
I recently steam cleaned / detailed the engine bay, maybe must’ve damaged or removed some of the sealant near the firewall at the wiring harness, not sure. Attaching some pictures of the engine bay under the hood grills.
I saw in other posts people mention a rain water deflector, I’ve never had one. Couldn’t find it online either.
Looking for advice.
I recently steam cleaned / detailed the engine bay, maybe must’ve damaged or removed some of the sealant near the firewall at the wiring harness, not sure. Attaching some pictures of the engine bay under the hood grills.
I saw in other posts people mention a rain water deflector, I’ve never had one. Couldn’t find it online either.
Looking for advice.
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- CD5A51A1-2517-4512-8B59-1439D78983E2.jpeg (303.25 KiB) Viewed 4358 times
Hector
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1985 635 CSi, Auto
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1985 635 CSi, Auto
Re: Rain leak on driver’s side
I would reseal that main loom bulkhead grommet for starters. If that doesn't stop the water entry suspect the lower corners of the windscreen, especially if it has started to delaminate in these areas (going white). Either will likely result in water entering the ECU which you want to avoid.
'85 635csi JPS (RA2-66)
- cornwallis
- Posts: 35
- Joined: Sat Nov 28, 2015 11:12 pm
- Location: Houston, Texas
Re: Rain leak on driver’s side
Thanks for the advice!
I found a few products online: silicone sealant, 3M strip caulk, etc. anyone have a particularly good experience with any product? The silicon sealant (squeezing a tube) seems very messy. Thanks again for any input.
I found a few products online: silicone sealant, 3M strip caulk, etc. anyone have a particularly good experience with any product? The silicon sealant (squeezing a tube) seems very messy. Thanks again for any input.
Hector
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1985 635 CSi, Auto
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1985 635 CSi, Auto
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- Bigcoupe Contributor
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Re: Rain leak on driver’s side
Use a windshield sealant, you'll have to smooth the material (let it set up somewhat) around the wires, etc. Yeh, it can be messy, go slow.
89 635CSiA (11/88 build)
AlpineWeiss II (218)/Natur(0200)
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AlpineWeiss II (218)/Natur(0200)
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Re: Rain leak on driver’s side
Agreed on working that grommet area, doesn't look good in the pix
And what's that blue cable/tube
If that was something added, it's possible that it was never sealed properly either
I've been working on mine as well, first using "Shoe Goo", no shit, but wasn't satisfied with the results
Next I am going to try a different product, 3M Black Super Weatherstrip Adhesive
This was recommended by a professional, Klaus
I'll be reporting back on that once I get to it
And what's that blue cable/tube
If that was something added, it's possible that it was never sealed properly either
I've been working on mine as well, first using "Shoe Goo", no shit, but wasn't satisfied with the results
Next I am going to try a different product, 3M Black Super Weatherstrip Adhesive
This was recommended by a professional, Klaus
I'll be reporting back on that once I get to it
Bobbo
1980 633 CSi Cypress Green/Pearl Beige
2017 X5 M Sport Xdrive 35i Carbon Black/Ivory White
2005 330 Ci ZHP Cabrio Imola Red/Bone/Black
- cornwallis
- Posts: 35
- Joined: Sat Nov 28, 2015 11:12 pm
- Location: Houston, Texas
Re: Rain leak on driver’s side
Thanks for the feedback, very useful info!
FYI the blue line I put in recently, it’s part of vacuum hose kit. I think I need to seal that right.
viewtopic.php?f=2&t=32288
Regarding the rain deflector part that attaches to the grill, does anyone have that? I found one for $75, kinda pricey but may be worth it.
I’ll look for the windshield sealant.
FYI the blue line I put in recently, it’s part of vacuum hose kit. I think I need to seal that right.
viewtopic.php?f=2&t=32288
Regarding the rain deflector part that attaches to the grill, does anyone have that? I found one for $75, kinda pricey but may be worth it.
I’ll look for the windshield sealant.
Hector
____________________________________________________________
1985 635 CSi, Auto
____________________________________________________________
1985 635 CSi, Auto
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- Platinum Member
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Re: Rain leak on driver’s side
Autozone carries the 3M stuff
https://www.autozone.com/sealants-glues ... 249380_0_0
And try a search for a thread on that rain deflector, I'm sure I've ween it discussed here
https://www.autozone.com/sealants-glues ... 249380_0_0
And try a search for a thread on that rain deflector, I'm sure I've ween it discussed here
Bobbo
1980 633 CSi Cypress Green/Pearl Beige
2017 X5 M Sport Xdrive 35i Carbon Black/Ivory White
2005 330 Ci ZHP Cabrio Imola Red/Bone/Black
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Re: Rain leak on driver’s side
As far as I know, the rain deflector goes on the passenger side to guard the loom going through the firewall to the ECU
81 Euro 635 M90 with motronic. Currently under a complete nut and bolt restoration. Pictures at
flickr.com/photos/bertsphotos.
flickr.com/photos/bertsphotos.
- cornwallis
- Posts: 35
- Joined: Sat Nov 28, 2015 11:12 pm
- Location: Houston, Texas
Re: Rain leak on driver’s side
I saw a thread showing it on the drivers side, but not a lot of E24s have this deflector...
Hector
____________________________________________________________
1985 635 CSi, Auto
____________________________________________________________
1985 635 CSi, Auto
- 86_6series
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Re: Rain leak on driver’s side
If the sunroof drains are clogged a little heavy rain can cause leaking along
the drain tube inside the A pillar and collect water near the bottom of the speaker
grills.
the drain tube inside the A pillar and collect water near the bottom of the speaker
grills.
86-635CSi
96-MB C220 SOLD
98-740i
71-Continental MK3
96-MB C220 SOLD
98-740i
71-Continental MK3