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[cwill144]

Has anyone had an issue with water leaking in the boot of a 3.0 saloon. Have just emptied the boot and the carpet is soaked. Have looked for any water marks but nothing obvious. Can see the vents on rhs behind the bumper where it could get in. But any advice would be appreciated

[johnnydog]

Assuming there are no corrosion issues that may be allowing water ingress, I found the leak into my boot appeared to coming through the spot welded seam in the front edge of the boot lid aperture, just behind the rear window on either side.
You could see daylight through the seam if you shone a torch behind it. I applied a thin smear of Dum Dum both sides of the seam, forcing it directly into the seam, and its has been fine since. And it is barely visible unllike brushable seam sealer.

[TheBoy]

To be honest, unless something very obvious, somebody will have to get in boot whilst another hoses the car over.

[cwill144]

I had thought of using a smoke pellet as saw that on YouTube the other day. Tried being in the boot and nothing was obvious

[johnnydog]

To be honest, unless something very obvious, somebody will have to get in boot whilst another hoses the car over.

Although it may he hard to believe, but from  work related experiences, a hose on a car to try and find a leak doesn't always replicate actual rain water falling from the sky!
Issues with cabriolets for example that were often prone to water ingress sometimes could only get replicated parked in the rain instead of using a hose on a tripod!!

[robson]

I have the same problem I have sealed the areas where water appears to becoming from but still it leaks. I will now disable the trims etc and try again.

[robson]

sorry dismantle not disable

[sjc]

On 2 of my previous Omegas, it was the external trim between the C pillar and the rear quarter panel that was leaking - sealing the little plugs/grommets behind the trim worked well

[cam.in.head]

this is one of those nightmare jobs that can be hard to trace, not all leaks drip where the water is actually coming through either which makes finding it worse.
as others have said maybee lay in the boot ( when its chucking it down too if a hose doesnt recreate it !)
possabilities.
boot lip seal,rear window seal,roof areal,any of the rear lights,side pillar under areas ?,double skinned area between bottom of rear window and seal lip .
if you take the spare wheel and carpet out and start with an empty and dry floor you might see where it runs / drips from .   

[Mr Skrunts]

Just a thought but why not try putting a powerfull torch/lantern in the boot when its dark and see if the light shines out where possible leaks might be.