hey bud i had a 91 hatch that had that prob only when rained hard or pow washed if it leaks on backside of the sunroof take off back bumper the drain tudes have orrifice filters on the ends which are basically one-way valves that over time get clogged with trash and dirt completely remove them and you shouldnt have anymore troubles. they just pull out of the drain hose,if the leak is to frt of sunroof i'm not sure mine only leaked to rear.