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Leak in boot solved!!!

Discussion in 'Problems, Fixes, Tips...' started by Your Majesty, Dec 8, 2014.

  1. Your Majesty

    Your Majesty Copenworld Regular

    Joined:
    Nov 16, 2013
    Location:
    West Midlands
    Car(s):
    Copen, no other car.
    Well solved for me, but this may help...

    My boot was filling with water nearly every day last winter with all that rain, so I was not really wanting to go through all that again.
    I've carefully looked at the brake light on top of the boot and couldn't see where it may let in water and so on a dry day I laid some paper in the boot, closed it and poured a whole watering can full of water over it. Result - nothing, not a drop under the brake light and nothing in the boot around the edges.
    So I'm convinced that the brake light on the boot isn't the cause of the water in mine.
    Anyway, a couple of recent days of constant rain which last year would have meant a puddle under the carpet by the tyre pump to mop up, but this year nothing, no water at all. The reason is...
    My drive is on a steep slope and last year the front of my car was always pointing upwards. This year I'm parking down the slope, the front is pointing downwards and so far no water at all has got into the boot.

    The underside of the boot lid gets condensation on and always will when it's cold but I can't see that this is enough to make a huge puddle in the boot. The problem must be the outer boot edge seal. I've noticed that where the seal ends by the corners of the window, on each side water collects in the seal in a small pool, this is probably overflowing back into my boot when the car is pointing upwards but now my car points downwards it doesn't overfill back into the boot any more.
    Another thing I've noticed is that Kate's Copen never seems to get any water in. I can see that the seal between the bottom of the window and the boot squishes up more on her car when the boot closes than it does on mine - this suggests that her seal is a better fit than mine and the seals will differ between two supposedly identical cars.
    Anyway, if you have a slope and can park facing downwards, you may get a result :cool:
     
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  2. lyndon

    lyndon Copenworld Newbie

    Joined:
    Sep 8, 2014
    Location:
    York
    Car(s):
    diahatsu copen and a mini clubman
    I can confirm that I park facing down hill and have not had a problem yet,
    (had the car for 4 months ) we have had some heavy rain in York this Autumn.
    I have rubbed seal saver for dry suit cuffs onto all the seals around the boot and roof as well.
     
  3. Soc

    Soc Copenworld Regular

    Joined:
    May 26, 2016
    Location:
    Cardiff
    Car(s):
    Daihatsu Copen
    Hi Your Majesty

    I really need you advice and help regarding the leak in my Copen's boot. I originally thought it was coming from the rear brake light so I remove it and sealed it all up.

    After some heavy rain, low and behold water is still getting inside the boot and its not coming from the brake light but like what you said, the seals possibly the top ones near the window. From here I think it runs on the inside of the rubber and then enters the boot into a number of areas.

    I haven't tried parking it nose down on the slope but this isn't really a fix to the issue. You mentioned that Kate's Copen doesn't leak and that her boot seal is a better fit. Can you explain in more detail where her boot lid is a better fit so I can somehow adjust mine to fit better. I am tired of moping up water and I think its pretty poor for a Japanese car to have this popular problem.

    Thanks
     
  4. Your Majesty

    Your Majesty Copenworld Regular

    Joined:
    Nov 16, 2013
    Location:
    West Midlands
    Car(s):
    Copen, no other car.
    Hello Mr Soc, I wish I could help more, as I said parking my Copen facing downhill has meant that no water has got into the boot but facing uphill meant water got in after every rainy day. The thing is that I couldn't pinpoint exactly where the water gets in but it definitely isn't around the brake light on mine. Kate's Copen is a real mystery though because her seals look similar to mine and are not obviously fitting different. It may be something like the way the seals squidge down when the boot is closed. Another thing about her car is that the roof doesn't rattle anywhere near as much as mine. I've tried adjusting mine several times but it never seems to stay perfect for long (It is definitely affected by ambient temperature though, ie. rattly on a warm day, not so much on a cold day) - what I'm saying is that there are subtle differences between what outwardly appears to be the same car, she got a good one because she's never had to adjust the roof.
    If I do find anything more useful about the seals I'll of course post it, good luck with yours.
     
  5. Soc

    Soc Copenworld Regular

    Joined:
    May 26, 2016
    Location:
    Cardiff
    Car(s):
    Daihatsu Copen
    Hi Your Majesty

    Thanks for taking the time to reply. I have adjusted many things on the boot lid today and hopefully one day I will get there - no leaks. When I do I will post what I did. In the mean time I would appreciate if know of any fixes. It is definitely to do with the rubber seal and the boot lid and the way the lid sits down.

    Anyway, thanks again.
     
  6. stonemanty

    stonemanty Copenworld Member

    Joined:
    Oct 13, 2014
    Car(s):
    Porsche 997 GT3
    Mitsubishi Evo 9 RS
    Copen 660cc
    Cleaning the rubber all round and applying si!icon grease seems to help, it's stopped my passenger side window from leaking

    My mate gave me some grease which apparently is also used on diving gear - but I think he said respirator seals
    I read elsewhere that VW Eos (?) have the same problem/fix so it's worth hunting some down and spending an hour on it
     
    Your Majesty likes this.
  7. Soc

    Soc Copenworld Regular

    Joined:
    May 26, 2016
    Location:
    Cardiff
    Car(s):
    Daihatsu Copen
    IMG_1438.JPG IMG_1437.JPG Thanks stonemanty, I will try and get hold of some of this grease you mentioned. I also referred to the Copens gap mesurements around the trunk and mine read around 1 to 2 mm outside the recommended tolerances so I will see if I can adjust it and get it right. Maybe the boot lid isn't pressing down hard enough on the seals. Tell you the truth, every soft top I have owned has leaked in some way or another, and my Alfa leaks and that has a solid roof!
     
  8. Your Majesty

    Your Majesty Copenworld Regular

    Joined:
    Nov 16, 2013
    Location:
    West Midlands
    Car(s):
    Copen, no other car.
    - just thinking aloud, I don't know whether simply turning those two black rubber bungs that are on the underside of the boot lid that press down near to the rear light clusters wold make any difference?
     
  9. Soc

    Soc Copenworld Regular

    Joined:
    May 26, 2016
    Location:
    Cardiff
    Car(s):
    Daihatsu Copen
    I have already adjusted the rubber boot bungs but it makes no difference to the boot gap. Cheers
     
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