Mercedes 230CE

Hello,
I have a grey market '85 230CE. It has the same motor as an '84 190e. In my travels the other cay, the car started to sputter and stop. It has since refused to start. I'm getting spark. I also disconnected the fuel line going into the fuel distributor and when the key is turned fuel is dispersed. ( I figure the fuel relay works if these conditions occur). However, when I crack any line leading from the fuel dist. to the injectors there seems to be no fuel. This should be under pressure correct? I'm wondering if this sounds like my fuel pressure regulator. How can it be checked?? Any suggestions? A new fuel filter and fuel pump were installed last year. Thanks for your insight. Dave McDonald