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Rover 800 820 825 827 Got a Water Leak?

1999 Rover 800 825 V6 Coupe with Leaking Sunroof Drain Pipes!
1999 Rover 800 825 V6 Coupe with Leaking Sunroof Drain Pipes!

1999 Rover 800 825 V6 Coupe with Leaking Sunroof Drain Pipes! Rover 800 825 V6 Coupe with Drain Pipe removed! 1999 Rover 800 825 V6 Coupe with Sunroof Drain Pipes Resealed!
Car: 1999 Rover 800 825 V6 Coupe

Colour: Zircon Silver

When a Rover 800 gets a leak - it seems to cause a flood!

This Rover developed a leak that lead to the drivers side footwell filling up with water. The carpets are quite thick and the area underneath the footwell carpets is very deep, so a large pool of water had already collected before we even knew we had a problem.

We looked at the usual suspects, around the sunroof and around the door seals, but could find nothing. We pushed a length of curtain wire down the sunroof drainage holes and they all seemed to be okay. We then took most of the interior out from the rear of the car, thinking that the seal had gone on a rear side window, or even on the rear windscreen. The rear light clusters had also been tightened up in case the leak was from these, even though there was no sign of water in the boot or spare wheel well.

If the spare wheel well is filling up with water then this is usually down to the rear light clusters, or the seal around the boot itself. Both of these leaks can be hard to spot!

The rear lights can normally be tightened up. Or for good measure, removed, given a wipe and refitted.

The rubber boot seal (especially on the coupes and saloons) is prone to leaks. Normally the water gets in near the top just underneath the rear screen, then through capillary action works its way through and along the rubber seal, normally leaking in slowly at the lowest point! The rubber seal should be lifted up off the car, then the old sealant should be cleaned out. After this a tube of clear silicone should be applied into the grove. The seal should then be pressed back on, around the boot and any excess removed. This is normally very effective at stopping water getting into the boot.

This was not the problem on this car though, and drying out the car with newspapers stuffed under the carpet was not stopping the car from getting wetter each day!

Eventually during some seriously heavy downfalls of rain, we managed to spot a tiny drop of water on the sunroof drain pipe located up inside the drivers side footwell/front wing. The leak was coming from the sunroof drainage tube which enters the inside of the car before going into a rubber pipe, then it goes back out into the wing!

It appears this must be so that you can gain access to them if ever they become blocked! (There is also one on the front passenger side of the car & two rear pipes can be found in the boot behind the carpets.)

The problem was not a blockage it was just the small opening on the very end of the rubber tube was failing to cope fast enough with the large amount of rainfall we were having. The water was coming out between the plastic pipe and the rubber tubing.

The rubber tubing was pulled out of the hole and detached from the main plastic drainage pipe. It was they wrapped in a bit of plumbers PTFE tape to try to create a better seal between the two. Then, just for good measure a small amount of 'dum dum' was used around the top, just to make sure of a complete seal, then the rubber tube was pushed back through the hole into the wing.

This has solved the problem and eventually the carpets did dry out!

The Rover 200 Coupes are also prone to leaks from the seal around the roof openings and the rear wiper as well as the boot seal and rear light clusters. The seals around the roof can be lifted off and placed back on, although you may wish to use some silicon. The rear wiper can be sealed around where it comes through the glass with some 'dum dum'.

12 Months later and the Passenger side footwells flooded!
Please see here for a video showing the Passenger side footwells flooded!


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