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Odd A-Pillar Water Leak #736878
June 02nd 2018 8:53 am
June 02nd 2018 8:53 am
Joined: Sep 2013
Posts: 727
Indiana
tuner4life Offline OP
old hand
tuner4life  Offline OP
old hand
Joined: Sep 2013
Posts: 727
Indiana
I am pretty familiar with the common rain leak points around the windshield area of these vans, but I've encountered an oddball that I can't quite figure out.

Symptom: water leak from the hole seen in the picture after car wash and/or rain. doesn't just drip down the inside of the kick panel area and out the bottom. No, it enters the cabin and ends up on the floor. It does this on both sides. It drips from about the tip of the arrow onto the floor. Coming from inside the pillar somewhere.


[Linked Image]



-The van was just repainted, windshield glass was out, the frame is all clean rust free OEM metal.

-Windshield was replaced with the older style gasket windshield by someone who has a few decades of experience. I don't believe the windshield is the problem

-There is a Lund visor installed, but it was installed using riv-nuts that are seam-sealed into the metal and sealed under the paint. Also used thread sealer on the screws. I suppose it's possible, but I highly doubt that is the leak point

- I felt inside the top of the windshield frame through the holes where the sun visors mount and the inside of that area is dry

-Spraying with a hose, this water starts dripping when the hose is sprayed around the base of the pillar. (Leading me to believe the visor isn't the issue as it is at the top). It's almost as if, the water is entering into the gap between the A-Pillar and the fender at the base of the Pillar, but how would it be coming inside? I can't find a hole under the fender where it might enter


What am I missing here? I'm going to try spraying it down again tonight while I try to figure it out. Finding a helper to hold the hose isn't always an option though. I'm leary of installing the dashboard or any flooring until this is 110% resolved.

Last edited by tuner4life; June 02nd 2018 8:54 am.

[Linked Image]
Re: Odd A-Pillar Water Leak [Re: tuner4life] #736885
June 02nd 2018 11:49 am
June 02nd 2018 11:49 am
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
Reed Offline
Maniac
Reed  Offline
Maniac
Joined: Aug 2001
Posts: 11,783
Fircrest, WA
My first though is the gasket or the installation of the windshield gasket. There nees to be some butyle sealant shot into the channel of the gasket where it mates to the body to ensure a watertight seal. You can get a tube of it and a cauling gan and try shooting some under the gasket lip on the outside of the van.


Windows- they're what make a van worth owning!
Re: Odd A-Pillar Water Leak [Re: tuner4life] #736889
June 02nd 2018 1:22 pm
June 02nd 2018 1:22 pm
Joined: Mar 2016
Posts: 323
Tucson,Az.
H
Hasan Ben Sobar Offline
enthusiast
Hasan Ben Sobar  Offline
enthusiast
H
Joined: Mar 2016
Posts: 323
Tucson,Az.
All things be equal , I'd agree with the above,
but I just had my window replaced and there was no sealant used. and I have no leaks. The key here is it does it on BOTH sides. Find the common point and trace it from there.


Tucson-it's a dry heat...like an oven
Re: Odd A-Pillar Water Leak [Re: tuner4life] #736890
June 02nd 2018 1:26 pm
June 02nd 2018 1:26 pm
Joined: Jun 2010
Posts: 13,708
Van Diego California
frscke1 Offline
frscke1  Offline

Joined: Jun 2010
Posts: 13,708
Van Diego California
My vote is a clogged cowl drip pan .... leakin thru the fire wall


SUNSHINE VANS-VAN DIEGO
ADRENALIN BY THE GALLON & CHASIN RACIN
ONE FOR THE DIRT & ONE FOR THE STREETS
'93 CHEVY G30 454 4X4 SPORTVAN EXT 146" WB
'92 CHEVY G30 454 BEAUVILLE EXT 146" WB
Re: Odd A-Pillar Water Leak [Re: tuner4life] #736892
June 02nd 2018 2:18 pm
June 02nd 2018 2:18 pm
Joined: Jan 2001
Posts: 2,003
Kellettville, PA
M
Meanmachine Offline
veteran
Meanmachine  Offline
veteran
M
Joined: Jan 2001
Posts: 2,003
Kellettville, PA
Is there an air vent door on the inside driver's compartment, if so look up in there or stick your hand up and make sure the area isn't clogged with something.

Re: Odd A-Pillar Water Leak [Re: tuner4life] #737202
June 11th 2018 9:45 am
June 11th 2018 9:45 am
Joined: Sep 2013
Posts: 727
Indiana
tuner4life Offline OP
old hand
tuner4life  Offline OP
old hand
Joined: Sep 2013
Posts: 727
Indiana
Sorry for the delay here. I was away all week. The windshield guy came back out and shot a professional type of windshield sealant around the top of the windshield and around the top corners. He popped the locking strip up and shot the sealant in between the gasket and the metal window frame. There is nothing visible from the outside. Had the van outside in a huge rainstorm over the weekend and the windshield leak seems to be fixed!

I did find other leaks that include the back door seals and pop out window seals, as well as a small leak on the passenger side floor which I believe is coming through the HVAC box where it is supposed to be sealed to the firewall. Not really sure where to start with that one besides rip it all back out and try to re-seal.. Maybe Flex-Seal? I don't know.

Last edited by tuner4life; June 11th 2018 9:46 am.

[Linked Image]

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