I think the idea was to put the non-turbo 300D engine into your relatively clean car.

Pull ALL the glow plugs. Crank the engine. See if the engine is
pumping atomized fuel out the glow plug holes. You will know immedlately if the pump is doing its job. The engine should fog up a good size garage in no time flat. (CAUTION: DO THIS OUTSIDE)

Do this before breaking the injector lines.

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71 220D 169K wrecked
83 240D 118K sweet 4 speed
91 350SDL (one of the 60% good engines) 156K
84 300d (loaner to my sister) 189K
79 300SD (partswagen)
86 420SEL partswagen
70 220d (partswagen)
68 280s GASSER!!! under construction now
85 300sd 310K miles winter beater car retired
93 300d 2.5 turbo 168K wife's car
83 280SL euro 5 speed 155K
69 250S newest project 54K

Appreciate the info fj bertrand

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David Dodge
1982 300D Turbo Mercedes
1948 Willys Jeepster