Your description leaves a lot to be desired.
I had to check your profile to find that you own a 1977 300D.
Could you post digital pictures?
It is possible that you do need an injection pump, but; nobody here can answer your question from your description.
More data needed also:
#1. Total miles?
#2. Any vehicle history?


Cute name "I AM BROKE". LOL

__________________
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

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