I checked under the lining in my boot today and found a small swimming pool sloshing around under my spare wheel. The left hand corner of the lining carpet nearest the boot lid was damp but not soaking. I've checked my seals and I can't see any damage or areas where it has pulled away from the car and I can't see how it could be coming in from under the car...! Anybody had a similar experience? I use a jet wash a home to rinse the car when I wash it (not a power washer just a normal hose with gun) could this be the cause? I'm pretty sure I don't have a leak from the washer jet at the rear as it does not smell of washer fluid...... Any ideas??