I have an 02 Accord EX with sunroof that has developed a weird leak that saturates the floor on the front passenger side when the car is left sitting in heavy rain.
What is weird about this leak is that the water seems to be coming up from underneath the carpet. It is not entering the car via the sun roof or the door as the seat and carpet on the side remain dry. (I have previously experienced blocked drain holes in the sun roof - but that spills water into the passenger seat and leaves a noticeable puddle on the seat).
I have attached a picture of the situation and I have circled where the dampness seems to start from.
Any ideas on what is causing this?
Chris's answer that it is a problem with the sunroof drain pipe matches with what my mechanic recently said (and Chris beat me to answering my own question).
My mechanic also stated that it was not economically viable to replace that drain pipe given how much interior etc would have to be removed to in order to access it. I don't know if this is BS or not.
(minor rant) My mechanic's solution to the problem was to permanently block the drain pipe so that it doesn't leak water under the carpet. Given that my driveway slopes slightly to the right, this means that water now pools in the sunroof on that side and spills over the lip of the sunroof and pours onto the passenger front seat - resulting in the same problem. I found this solution of theirs to be spectacularly stupid and I have some choice words selected to say to them but I am holding back on that right now (end rant)
My current solution is to reverse the car into the driveway so that it now slopes to the driver's side and water drains out the drain pipe on that side (which doesn't leak)
I was already planning on replacing this car in 2019 anyway, so I am taking deep breathes and letting this issue go.