Um, plug the leak? Serioulsy. either the resevoir is craked, the pump is leaking or the hose fell off. Those are about the only possibilities.
Jeff Klein, Aiken, SC
1980 FI Spider, Veridian with Tan (sold about a year ago), in the market for another project
1989 Spider, sold
2008 Mercedes SL65
2008 S600 Mercedes V12
if its your pump leaking or not working. I did a mod to both my 80 and 81. From Ace hardware get a rubber bung that is conical in shape then drill an hole in the bung and insert a tube fitting inside the the bung. Press both into the bottom hole of your tank the friction fit works perfect and seals against leaks. You can then use any type of externally mounted washer pumps to suit your taste. This saved replacing two tanks and washer motors.
I did about the same thing as spiderjim on my 80 FI. Instead of using a rubber bung I removed the old motor and just re-used the round rubber piece off of it. Siliconed it in and stuck a hose through the center. Fit and sealed perfectly. I also cut the little plastic mesh screen leading into the platic bottle so the hose would go all the way into the bottom of the bottle. A old external pump from a parts car and my wipers are good to go.