Hello: I have a problem with my old Century Pump Motor (the label says Jet Pump Duty, part 8-151998-21, 1.5 HP, 3450 RPM). It is located in a 12' deep well and has a 2" suction pipe and 2" discharge pipe. When I turn it on it seems like it runs for 30 seconds (at least makes some running noise), no water comes out and then it dies. When I loosen the nut on the inlet line for the priming, some water come out so I guess there is water in the system. It is all rusted and corroded and I think it nee...