1995 Silverado 3500 dually bought it non running…my first diesel engine but I’m learning with the help of the forum and YouTube …just got a pop tester and soaking my injectors (6.5 L Detroit diesel) getting them ready to test but may be in need of shims for Bosch 0430211097 turbo diesel injector…71 years old hope I’m not too old to learn but I am a grumpy old man…thanks panran