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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Thu Aug 09, 2018 5:23 pm    Post subject: Cabrio drain tube help Reply with quote

Hi all i sem to have a leak into the rear off side seat and footwell. Ive had the carpets out and dried but its back again.

So far i have removed the rear wheels and liners cleaned out the drains there. Ive taken out the speakers and rear panels and cleaned out the tray and ensured the pipe is on ok and blew compressed air down to ensure that the down-pipe is clear all good. I thought that would be it sorted but no. Wet agin under the carpets.

I have had the roof in serivce mode and poured water into the 3 drain holes and on the one nearst the back the water tuns out of the rear bumper he front one drains out of the rear under the drain hole and the middle seems to go o where. None of them are draining into the tray behind the speakers or the pipe so i suspect someng has come away upstream. Has anyone else had this or have any idea how to get to the pipes by the top drainholes? Ive seen the pipe routing diagrams and it seems they should all drain down to te tray and out of the drain hole unless the c4 is different? Thanks in advance.
 
  
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5020
Location: Brighton


PostPosted: Thu Aug 09, 2018 7:27 pm    Post subject: Reply with quote

Blimy .. you have had your share of problems so far !

Ok .. rear drains so behind the speaker is the catch tray .. this has a plastic pipe on it which can spit or not be connected , its standard practise to remove the rear panel and inspect the catch tray / pipe for any water leak problems .

The pipe from this runs straight to the wheel arch liner area , just behind it and the rubber grommet needs removing if not already done .. an airline up this pipe is also usefull ... see image .

I could use some pictures of where you are pouring in the water .. some of the drains dont go into the catch tray .
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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Thu Aug 09, 2018 8:41 pm    Post subject: Reply with quote

Haha i know but nothing too major so far and was prepared for a few buying an 18 year old car. In a strange way i quite like it as i get to know how the car goes together!

Ive had the side panels off inside and drains/catch trays are cleared and pipes are connected correctly etc. The ones in the wheel well as per your picture are cleaned out too. Ive had a compresses air hose in the drain hole behind the speaker and blown through so all clear there.

Will have another look tomorrow and get some pics to post up to help with diagnosis.
 
  
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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Thu Aug 09, 2018 8:45 pm    Post subject: Reply with quote

A couple of pics of the rear carpet after a heavy downpour!
 



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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 13816
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Thu Aug 09, 2018 10:38 pm    Post subject: Reply with quote

Best thing to do is sit in the back with you interior side panel off and have a hose pipe on the roof. Watch where the water runs down inside the car and down into the tray/reservoir bit and make sure the water then runs freely down the drain from it. Make sure any water isn't spilling out and into the car. My bet is the bottom drain plug demort stated isn't clear.
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Fri Aug 10, 2018 6:02 am    Post subject: Reply with quote

Thanks Alex i will give that a go and see if i can identify the issue.

Bottom drain plug asper demorts pic is definately clear and not bumged up though as ive had compressed air down it and some water when testing it and its running fine. The problem is upstream somewhere yet to be determined. Will get the panel off again. Thumb
 
  
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deMort
Zolder


Joined: 21 Mar 2015
Posts: 5020
Location: Brighton


PostPosted: Fri Aug 10, 2018 7:32 pm    Post subject: Reply with quote

Your first image shows water running down on top of the carpet .. that would indicate its from the drain catch tub area.

There is a corrigated pipe there .. is that connected and not loose or is it split .

Alex,s answer is one i would do .. panel off , someone hoseing it down from the outside and look to see where the water is coming from ..

To be honest its how we find leaks at work !!

EDIT .. you might want to pull out the wiring gromet for the rear window wiring just to see if theres water there .
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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Sat Aug 11, 2018 1:37 pm    Post subject: Reply with quote

The images were from when the catch tray was blocked solid. Id cleaned the outlets when you suggested a while ago but didnt do the trays till i found all that water. This is when I removed the rear seats, carpets and side panels cleaned it all out. Whats happened since its all back together but still wet, no where near like it was! Makes me think something else is blocked. Yesterday i had the roof in service mode peeled the screen part back and found the drains and they are all clear and the corrugated pipe is connected and not split so all that looks fine. It could just be now that the dampness is from it not fully drying before maybe. Will get the side panel off again though and have hose run over it to see.

Is there any pics of how the shute shields (best description i can think of) go back in anywhere?

Thanks again for everyones help and suggestions
 
  
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alex yates
Brands Hatch
Brands Hatch


Joined: 06 Mar 2014
Posts: 13816
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Aug 11, 2018 2:22 pm    Post subject: Reply with quote

Could well be you've solved the leak and the extra water is just excess stuff draining out the foam backed carpets - they're like sponges.

If you have a dehumidifier in the house, leave it in the car running overnight and also put something under the carpet to hold it up so air can circulate under it and dry it out. I've used a small paint tin in the past and just wedged it under the floor carpet to hold it up.
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2000 Manual 996 C4 Arctic Silver Convertible


 
  
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Kbald
Trainee


Joined: 11 May 2018
Posts: 73
Location: West Yorkshire


PostPosted: Tue Aug 21, 2018 8:03 pm    Post subject: Reply with quote

So to update the thread the leak was fixed by unblocking the drains behind the speaker and the water was just residual left over. There has been several heavy prolonged showers and there is no more dampness so happy days. One for cab owners to keep an eye on for sure.
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2000 Carrera C4 Cabrio Tiptronic
 
  
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