Okay, where to begin, 8 new Bosch injectors, new injector harness, checked the harness next to the alternator bracket, when I first replaced the injector the oring was almost completely gone, pulled the valve cover and the intake and exhaust valves were out of adjustment .008 but I can't imagine that would make the noise, haven't checked compression, in the rpm gauge it stumbles climbing and when you let off the pedal you can hear the knock clear as day, this afternoon I'm going to adjust the valves to spec and see what happens, really don't have time to pull it and build it I'm on the road all week every week, could it be a headgasket blowing compression? When you pull the plug on that injector the knock stops but it also changes the way the engine runs so it's not a dead cylinder, took a rifle cleaning rod and measured top and bottom dead center on multiple cylinders and not precisely accurate but no noticeable difference, help? Please? I'm starting to lose my mind working on this thing..
