Hi

i have a 2007 Ford Focus MK2, I have a leak in my car which I am completely stumped as to where it’s coming from. The front right of my boot carpet is soaking wet as well as my rear right side seat. I have changed the boot seal & ive taken the boot apart & sealed absolutely everything to stop it & I’m still getting water coming in. Can anyone suggest anything else? 

Hi

I also have a 2007 mk2 hatch back with a boot leak. Last year I sealed everything around the back of the car because I had a leak on both sides of the boot. I sealed the ends of the roof rails, the hinges on the tailgate, and around the back lights. My problem turned out to be the screws holding the back lights on. I plastered a lot of sealer around the screw holes, and that solved it until a couple of weeks ago, when a leak re-appeared on the drivers side. I am looking for a better type of sealant now.

I know this is an old thread but I thought I might as well post here rather than creating a new one as there are already so many on this topic.

Whilst checking the spare in our Mk2.5 I noticed a small puddle of water in the small depression to the left of the well (arrowed 1 in the attached photo). On taking out the wheel I found the well was bone dry so it obviously wasn't a serious leak. On closer examination I discovered more water lying in the other two depressions (arrowed 2). I assumed this was coming down behind the L H trim and the most obvious source was the light cluster so I took that out to have a look behind. After clearing out the accumulated cr@p the only item that looked at all suspicious was the rubber blanking plug near the bottom (arrowed 3). This was slightly loose. The cable entry grommet looked firm and intact. I poked a bit of stiff wire down the screw holes and found they are blind holes so I don't think they're likely to be the source.

I'm not a great fan of silicone sealant - it's a right PITA to clean off once it's cured - so I took out the plug and filled it's groove with silicone grease so that when refitted surplus grease oozed out. Hopefully that'll cure the problem. I haven't tested with water - yet, I'm just waiting for some more rain (shouldn't be long in this country 😀). I'll keep you posted.

 

59 minutes ago, mjt said:

... the most obvious source was the light cluster so I took that out to have a look behind. After clearing out the accumulated cr@p the only item that looked at all suspicious was the rubber blanking plug near the bottom (arrowed 3).

 

That was my issue too, but so far after a good clean out (no silicon applied|) it seemed to have done the trick...

 

I've had 2 sources of water leaks into the boot on mine.

First one which took ages to narrow down was leaking in through the body panel joints in the very rear corner of the boot on the LHS (looking into the boot) where the rear panel meets the bodyside. You need to get the trim off to get your hand in there. Found evidence of some sealer from the factory but it must be applied blind into there. Fixed with lots of silicone sealant.

Probably more likely is water leaking in through the locuts where the taillamp screws go into (to the right of #3 in the above photos)- these have a foam seal on them but I've had a few where the seal has totally rotted away including one I'd previously replaced. Bit of faffing needed to replace these as you need to drop the trim panel down to get behind it or you can try sealing up from the outside plus maybe adding a run of sealant to guide water away from the area.

As I said I'd keep you posted here's the latest:

Following my use of silicone grease on the blind grommet I've been waiting for some decent rain but in our corner of East Anglia (which is one of the driest parts of the country) we've only had a few light showers.

Today I decided to pour some water over the hatch on the passenger side, both above the spoiler and over the light cluster. I used warm water as that's less dense than cold and (I think) has lower surface tension so should be more penetrating. Left it half an hour then took a look and the areas that were previously wet were still bone dry so tomorrow I'll be putting everything back in the boot.

Fingers crossed that's sorted it.

Quick question. Just solved a water leak on my mk3 focus. While I was under the car I pulled the rubber grommets off to do with the air vent at back behind the bumper to check for water. Some water came out about a cup fill but insulation is soaked. So is ok for these grommets stay of for a long period till I have time to seal the air vents 

thanks 

I think I have finally solved the leak in the boot on my hatchback. After curing the leak around the rear lights, I still had a small leak coming in after heavy prolonged rain. It turned out to be the rear spoiler leaking slightly through the bolt holes securing it. A bit of sealant around all of them solved the problem.

7 hours ago, lee1979 said:

Quick question. Just solved a water leak on my mk3 focus. While I was under the car I pulled the rubber grommets off to do with the air vent at back behind the bumper to check for water. Some water came out about a cup fill but insulation is soaked. So is ok for these grommets stay of for a long period till I have time to seal the air vents 

thanks 

I had the leaking boot issue too. Simply removing the rubber grommets and leaving them out has completely fixed the issue for me, no need for sealing the rear vents behind the bumper.

I had a toothache, went to the dentist and he replaced a filling in my upper right molar, I'm sure if you have toothache, this action will cure it... 🤣

16 hours ago, lee1979 said:

Just solved a water leak on my mk3 focus

And ...

9 hours ago, noscail said:

removing the rubber grommets and leaving them out has completely fixed the issue

I have to say while removing the rubber grommets to let the water drain out could be called a 'solution' it is not a 'fix'. Finding where and how the water is getting in and having a method to stop the water would be a 'fix'

By allowing the water to continue to leak in, then eventually rust will start and the metal will rot away which will be a bigger problem.