I have a '90 Civic Wagon, and every time it rains, the passenger floorboard gets soaked. I can't find where it is coming from. I don't see where it could come from beneath the car or the window. The door & other areas are dry. I want to fix the areas with rust, including the floorboard if necessary, but not until I can find the leak. Any ideas? I really appreciate it.

 

On my old 88 std it was leakin from the windshield..