Post by
Q451990 »
https://forums.nicoclub.com/q451990-u142.html
Mon Nov 02, 2009 6:28 pm
I have never heard of that issue in the spare tire well before, but I have seen it in other cars. The best way I have found to diagnose it is to lock yourself in the trunk with a flashlight (remote in hand) and have a trusted friend spray water over the rear of the car with a garden hose. Usually it's best to do this without a sprayer so that the water can "sheet" over the car in different areas.
Then it's just a matter of finding the water and fixing the leak. On one car it was a bad seam weld in the trunk gasket area and I patched it using silicone.
Good luck!
Heath