Mould in car

[Pesky jones]

I took the carpet out on the right hand side, and poured some water in at the top of the boot to the right hand side. I then got in the boot and looked for where the water comes out - you can see in the video. I then took the light out did the same - this is where I videoed. I did see there was loads of black sludge build up at the bottom. Does anyone know where the water is supposed to drain to? Where should I put sealant

[Pesky jones]

So im not sure if anyone keen eyed spotted the issue, but on the right hand side there's no vent! Just a big hole which is where you see the water drop in the video. I need to just fit a vent then hopefully problem solved.

[Newbieintown]

I have just bought a GTI this week everything standard, no crash damage, no sunroof, standard rear lights. How ever I have found a puddle of water under my spare wheel. Better get the hose out! 

[Pesky jones]

Apparently these vents causing the leak are a common problem. Especially if youre missing one! Just ordered mine for tuesday

[Newbieintown]

Do you have a part number for the vents? And where abouts do these vents go? I will check it out tomorrow and see if they are there on my car.

[Pesky jones]

No sorry I just rang vw and ordered it. If you pull back the carpet on the sidewalls of the boot, you can see the vents there

[Newbieintown]

Ok awesome thanks, it seems a common issue with golf, found this a good read some other place to look around the boot area..
http://uk-mkivs.net/topic/4313-water-leak/   

[Pesky jones]

Seeing as.I can access the vent from the inside, can I fit the new vent from inside? Or do I have to remove the top of the bumper?

[Newbieintown]

Bumper has to come off, am holding out till the new year when mine is coming off to have a re spray and I will replace them then.

[Newbieintown]

Am going to try and find the issue tomorrow. Hoping it's an easy find and fix.

[Pesky jones]

All done! Hopefully no more water!

[Newbieintown]

Oh sweet, did you just replace the grills? Or did you get new or just seal them up?

[Pesky jones]

By grills do you mean the flapped vents? Well there's supposed to be one on each side but for some reason my drivers side was just missing! So I just bought a new one and fitted it.

I approached the task thinking I would have to remove the bottom plastic valance completely and then remove the metal panel on top separately. But I just removed both together still attached to each other.

For future reference to anyone else that needs to remove both, here is how I did it

Remove rear lights.
Jack up car and put on axle stands.
Undo the two bolts with a torx screw under each light (4bolts total)
Remove the four bolts from underneath the plastic valance
Remove three screws from each wheel arch that connects the two panels, and the arch liner.
Pull the whole lot off.
Remove the electrical plug for the number plates light

Voila

You need a t30 (I think)
A t20

[Newbieintown]

How's your water problem been since you replaced the air vents? I still have water come in :-(( not sure where to look next, rear washer wiper works, I don't have a sun roof and the boot seal seems perfect.....

[Pesky jones]

Seems fixed, boots nice and dry.

Strip the boot out, get in and put a hose on top I reckon.

Have you checked the two umbilicals? Ive heard they can be an issue.