Leak under driver seat, what sealer to use?

[lada03]

Hey Guys
My 85’ carrera has been sitting on the driveway with heavy downpours.

Under the drivers frobt seat there was a small accumulation of water around the black area. I dont know where the water is coming in to accumulate there?

But can someone recommend a sealer product yo apply to that area? I took a picture underneath as well to seen if there was a hole

[almostordinary]

Check out the post on what I found after my 87 coupe was out in the rain.

Found My 87 Coupe - So It Begins

My issue was my rear window seal, you may want to investigate your rear seats.



The padding under there retains moisture like you wouldn't believe. Aside from some water on the floor and slightly damp carpet I was going to leave it alone and windows down to dry...

Luckily I decided to tear it apart and find the real culprit.

I don't think you have it as bad as I did, but sealant on the floor isn't going to stop wherever the root of the problem is.

Have someone with a water hose spray all the glass/window seals while you're in the car. Maybe even take out the passenger seat to get a better view.

[Mark Salvetti]

You really need to figure out where that leak is coming from. My guess is the lower windshield corner. That can also lead to a lot of rust under the windshield seal. It would be dripping under the dash.

Mark

[proporsche]

also....make sure that your drain pipes from sunroof(if it is coupe) are not blocked...
Ivan

[EC900]

One way to find a leak is to lightly apply some talcum powder (light dusting) to the floor and if possible any other suspect surface, either recreate the rainfall or let mother nature do the dousing. Next day look for streaking in the powder and you’re likely to find the incoming source.
A lumber moisture meter probe can detect any wet carpet areas if unable to remove glued down portions.

[lada03]

I think it coming from the driver side door seal. But can’t be certain. It doesnt look too good. The pull switch for the gas tank also has drops coming out

[lada03]

Both seats are out. Passenger siidenis dry as a bone. Its the deiver side. The carper by the door slightly as well

Originally Posted by almostordinary

Check out the post on what I found after my 87 coupe was out in the rain.

Found My 87 Coupe - So It Begins

My issue was my rear window seal, you may want to investigate your rear seats.



The padding under there retains moisture like you wouldn't believe. Aside from some water on the floor and slightly damp carpet I was going to leave it alone and windows down to dry...

Luckily I decided to tear it apart and find the real culprit.

I don't think you have it as bad as I did, but sealant on the floor isn't going to stop wherever the root of the problem is.

Have someone with a water hose spray all the glass/window seals while you're in the car. Maybe even take out the passenger seat to get a better view.

[lada03]

Mark, that maybe very well it

As I see dropa under the dash where the gas cap pull is located

Originally Posted by Mark Salvetti

You really need to figure out where that leak is coming from. My guess is the lower windshield corner. That can also lead to a lot of rust under the windshield seal. It would be dripping under the dash.

Mark

[917_Langheck]

If you think it's the driver side seal, there's a good chance it is the "J" felt that screws into the upper frame that is letting in the water. That is where I found my slight water ingress. The worn felt was allowing water past before it could be shunted down the front of the door frame.

[lada03]

Can you send a pic of the “J” felt so i have a better idea whereto check

Originally Posted by 917_Langheck

If you think it's the driver side seal, there's a good chance it is the "J" felt that screws into the upper frame that is letting in the water. That is where I found my slight water ingress. The worn felt was allowing water past before it could be shunted down the front of the door frame.

[917_Langheck]

https://es.hoffmann-speedster.com/media/image/23/d5/57/515-0904-1158dcb27d5ef43.jpg

There are not very many pix of the part, and most are poor at that. The part number is:

911 542 403 01 (L before 85)
911 542 404 01 (R before 85)
911 542 403 03 (L 86 and after)
911 542 404 03 (R 86 and after)

It is affixed to the upper body frame where the window frame meets the chassis when the door is closed.

[917_Langheck]

Found a pic. Between the green arrows...

[Mark Salvetti]

Originally Posted by lada03

Mark, that maybe very well it

As I see dropa under the dash where the gas cap pull is located

Mine has a windshield leak on the passenger side. There isn't much under there to catch it, so it drips on the floor. But on the driver's side there is more under there to catch the drip and redirect it.

If it's on the gas door pull, I don't think it is going to be from the door seal.

I don't think the water on the door sill is anything to worry about. Rain will get into the door through the window seal, and drip out the drain holes in the bottom.

Mark

[lada03]

It was a bad down pour….. but all signa point to drivers side

I out the front seats back in.. will leave it alone , I guess

[ClickClickBoom]

Front and rear windscreens leak at the lower corners with old clapped out seals. The second spot is the sunroof drains, open the sunroof and you can see them plainly. Do not use wire you could poke a hole in the rubber connector hoses, use weed wicker “string”.

[ChrisHamilton]

Compressed air works well to blow out the sunroof drains. Leak could be coming from any of the places described above. Sometimes it can be incredibly frustrating trying to find the source as it often is not where it logically would appear to be.

What we often do at the Shop is take a water hose and spray the car. Have someone sit inside and try to see if they can spot the source of the leak. Sometimes it works, sometimes you still can't find it.

If the car has a sunroof that would be the first place I would work. Blow out the drains and then test with the water hose.
WAG but in order of probability, sunroof, windshield seal, rear window seal, door seal.

[manbridge 74]

Got a 84 911 in one time with a leak. I was expecting the compressed air trick to work but it turned out some jack-hole had done some sunroof work in the past, losing a screw that fell back into drain tube. I was finally able to remove it along with plenty of rusty dirt after finding that a long piece of 1/4 inch all thread made for a good tool to ream the drain.