Do you have good fuel flow from the pumps? Pressure is one thing, but volume is important too.

Does the cold-star injector spray?

Try having someone cranking and go push down the air metering flap in the intake. See if you get fuel. Having sat that long without any attention, you could have a bunch of varnish buildup or corrosion inside the FD. If the FD is the issue, you're probably better off having it sent off for repair and calibration or pulling a known-good unit from a junkyard car.

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Current stable:
1995 E320 157K (Nancy)
1983 500SL 125K (SLoL)

Gone but not forgotten:
1986 300SDL (RIP)
1991 350SD
1991 560SEL
1990 560SEL
1986 500SEL Euro (Rusted to nothing at 47K!)

Gone and wanting to forget:
1985 524TD 167K (TotalDumpster™) [Definitely NOT a Benz]