Interior water leak

reverend-frog · 11-11-16, 04:05 PM

I'm sure this is an age-old problem but my B4 coupe has soaking carpets in all four footwells (although the fronts don't seem as bad).

I have checked the little heater nozzles either side of the centre console and they are dry so hopefully the heater matrix is not the problem.

I have also noticed that the passenger side A-pillar trim isn't fitted properly, and there is some 'milking' on the bottom corner of the windscreen.

Does anyone have other suggestions?

I'm going to check the pollen filter housing tomorrow

Hanuman · 11-11-16, 05:33 PM

Leaves/debris in the scuttle area, causing a build up of water, which slowly seeps in. The carpets can hold a huge amount of water, so once you drain floor, don't be surprised if another gallon of liquid comes out.

Bad windscreen repair, resulting in water tracking in. If you get the screen removed intact, it can often be salvaged. The labour for this might not be far off the same amount as if the screen were accidentally and comprehensively damaged by flying stones/house bricks and you paid an excess...
Just saying.

Sunroof, if fitted, drains, blocked causing a build up of water which tracks in.
Sunroof seals.

Damaged grommets for cables, letting in build ups of rain water.

reverend-frog · 12-11-16, 02:00 PM

Car doesnt have sunroof so that's not it thankfully. Heavy rainfall last night and the rear footwells are like swimming pools. Does this narrow my search?

4v6 · 12-11-16, 06:22 PM

Have the door panels ever been off?
If so Id have a punt on the door membranes being missing or holed, could also be the door seals or water getting in through a missing grommet.
Easiest way to find any leak is to get in the car and have someone start at the front of the car with a hosepipe while you look for leaks as they slowly mover over the car.

reverend-frog · 14-11-16, 05:09 PM

Haven't had the door cards off yet, but after another night of rainfall (and a new swimming pool in the rear footwells) i felt around the bottom of the passenger door and the carpet on the bottom of the door pockets was wet to the touch. definitely suggests missing/damaged membrane.

sinbin5t · 14-11-16, 05:13 PM

Quote:

Originally Posted by reverend-frog

Haven't had the door cards off yet, but after another night of rainfall (and a new swimming pool in the rear footwells) i felt around the bottom of the passenger door and the carpet on the bottom of the door pockets was wet to the touch. definitely suggests missing/damaged membrane.

it is surprising how much water Coupe or Cabbie doors hold when the drain holes are blocked, guess how i know

11-11-16, 05:33 PM	#2
Hanuman Trickster Classic Audi Club Member Join Date: May 2009 Location: Heckling from the cheap seats, Phnom Penh, KoW Posts: 7,006	Leaves/debris in the scuttle area, causing a build up of water, which slowly seeps in. The carpets can hold a huge amount of water, so once you drain floor, don't be surprised if another gallon of liquid comes out. Bad windscreen repair, resulting in water tracking in. If you get the screen removed intact, it can often be salvaged. The labour for this might not be far off the same amount as if the screen were accidentally and comprehensively damaged by flying stones/house bricks and you paid an excess... Just saying. Sunroof, if fitted, drains, blocked causing a build up of water which tracks in. Sunroof seals. Damaged grommets for cables, letting in build ups of rain water. __________________ I wish they would keep the damned Chinese away now that I can go home, so that I can enjoy Fish amok and a draught Angkor

12-11-16, 02:00 PM	#3
reverend-frog Grown up member Join Date: Nov 2016 Posts: 24	Car doesnt have sunroof so that's not it thankfully. Heavy rainfall last night and the rear footwells are like swimming pools. Does this narrow my search?

12-11-16, 06:22 PM	#4
4v6 Ex Member Classic Audi Club Member Join Date: Dec 2007 Posts: 5,565	Have the door panels ever been off? If so Id have a punt on the door membranes being missing or holed, could also be the door seals or water getting in through a missing grommet. Easiest way to find any leak is to get in the car and have someone start at the front of the car with a hosepipe while you look for leaks as they slowly mover over the car.

14-11-16, 05:09 PM	#5
reverend-frog Grown up member Join Date: Nov 2016 Posts: 24	Haven't had the door cards off yet, but after another night of rainfall (and a new swimming pool in the rear footwells) i felt around the bottom of the passenger door and the carpet on the bottom of the door pockets was wet to the touch. definitely suggests missing/damaged membrane.