I am trying to get a friend's '88 260E back on the road, and I am stumped at this point. It was running roughly and I replaced the ICV with a used but known good one. It sat for some time and now will not start. It stumbles, and will run for a second or so, but always dies. The fuel pump is running, and there is fuel at the supply line. There is also pressure at the cold start valve, but when I crack individual injector lines at the distributor, there is little to no wetness. I think the cold start valve is delivering fuel (allowing the stumble at start), but the injectors aren't getting any; does that sound possible? Why would this occur? Is there a sensor that will shut the fuel distributor down?

This is driving me nuts; thanks for any help!!!

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1992 300D 2.5T
1980 Euro 300D (sadly, sold)
1998 Jetta TDI, 132K "Rudy"
1974 Triumph TR6
1999 Saab 9-5 wagon (wife's)