Quote:
Originally Posted by raubvogel
Stupid question: could the injection pump and or injectors need some cleaning? I forgot what Mercedes recommended for their 70s-80s diesels but it was something you could buy at parts store.
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70s/80s diesels mostly used what is known as the "Reiheneinspritzpumpe" in german, idk the translation but these things are mainly known to last for ever even when neglected.
However adjusting it might be worth looking into.