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Full size diesels with needle injectors always have piping to feed the fuel that leaks past back to the tank.I made a new body for the 10° injector and cleaned it up in the ultrasonic bath. when assembled on the test rig it made a very satisfactory 'creak' and gave a tighter patten that the 15° nozzle from the last trial. To open the nozzle required more than 4kg on the 2mm plunger so well over 100 Bar.10°http://www.youtube.com/watch?v=VlOvH4qkcD015° from the last trialhttp://www.youtube.com/watch?v=bXWBzXdXy08