The car again started and re-started without a hitch today... So whatever was the problem is VERY intermittent... At your suggestion, a few minutes after driving home from work, I pulled the vacuum line off the FPR to see if there was any gas from a ruptured diaphragm... Looks and smells dry as a bone (see photo)... So I guess I chaulk this up as a no-problem at the moment until it happens again??
