Leakage?????

Hi, has anybody got any suggestions, my passenger footwell keeps filling with water.

I replaced the rubber door seals, dryed out the carpet, two weeks later there's water in the foot well again.

Its only the passenger side and I'm pretty sure its not the windscreen as thats been sealed recently.

Any ideas?

Could be the fresh air vent they sometimes leak between where its fitted with four srews to the inner arch/bulkhead that usually only leaks when the car is being driven (sprays up off the wheel)try washing it off with the carpets removed if you havent already, the door seals are not very water tight even when new.