Boy oh boy, this is heady stuff.
Yeah, my son thinks I am a doofus too.
Ok, I didn’t get enough of squirming on my back today when I was working on the shift linkage, I had to drop the windscreen washer reservoir and add a little check valve (found at wreckers on a Vanagon years ago).
shooftie 
#1 by Marius on May 31, 2011 - 10:10 pm
I need to do that to mine… Does anyone have any idea where I can find a check valve that fits this application on the OEM hose?
#2 by albell on May 31, 2011 - 10:17 pm
Bus Depot has this one, used in other VWs and Porsche (I think)
http://www.busdepot.com/details.jsp?partnumber=113955975C
VW part # 914 628 215
ab