If you can fashion a fixture to drive the pump, have a set of injectors connected via the hardlines, you could observe the spray patterns, watch if there are drip problems etc. If you have a set of hardlines to sacrifice, bend them (with heat then clean well) so the injectors can be mounted horizontal, use the starter motor to drive the pump. Anyone see any problems doing this?

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85 300D turbo pristine w 157k when purchased 167,870 July 2025
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked