Your vacuum system is not right.
The injection pump vacuum lines are mixed up.
Match the following pictures and it should run.
You have a bad MOD, look for the danger picture.
This will take more than one post, but I am trying to give you pictures of each change needed.
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ASE Master Mechanic
Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer
1985 300SD
1983 300D
https://www.boldegoist.com/