I'm further down my translation of the OM312 engine manual and I'm a bit stuck on a section heading: "Strahl- und Schnarrprüfung".
Google translate gives "Ray and snarling test", which is quite fun but not particularly useful!
It's the section on testing the injectors and I think it's something like "Rattle (or noise) and Spray testing" but a more accurate translation would be very welcome if anyone here has good German and knows about diesel engines.`