Hi, I am new to this forum so excuse me if I am not in the right page. I just rebuilt the Holset HX35W turbo on my 5.9l 12 valve Cummins. When I rev the engine the wastegate arm does not move. I traced the line going into a port on top of the injection pump (some solenoid looking thing). I put my finger over the port as I rev the engine and nothing happens, there is no vacuum. Am I missing something.