Well the car got good and cool, almost 7 hours of sitting after getting home from work (and temp is ~50*F). I pulled the CSV, first thing I noted was that both cap screws were loose, not falling out loose, but not tight. Got the CSV up enough to place in a "vessel" then cranked the engine. Working alone I couldn't see if it was sraying a fine mist or not, engine never started but I cranked a good 20 seconds (probably because of the open hole in the intake), with the expectation that if the valve was functioning there would be fuel in the vessel.
When I went back to the engine the vessel was bone dry. Not even so much as a drop of fuel formed at the injector end.
Now it's looking more like the CSV has gone south for the winter, but I still have to check the temp sensor. Next question is which of the temp sensors drives the CSV?
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.