OK, so i have a good deal of diesel experience but it all with marine diesels and they have a slightly different setup for the return line (they dont link the injectors), so coming from the filter to the first injector, then 2, 3, 4 and 5 on the last injector on my car has a blocked off line, where is that line supposed to go? I would assume the filter housing or is it supposed to be blocked off?

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1984 300D Turbo 169k

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