Abstract: A method for leak testing components including loading a subject component to be tested into a vacuum chamber; securing the subject component by a tooling that seals the inlets of two Circuits; selectively setting a series of valves to provide access to vacuum systems, or to a charge system that can supply tracer gas to the Circuits; pumping a main test chamber to provide a vacuum level suitable for sampling by a mass spectrometer; testing the subject component for continuity ensure there are no blockages within the subject component; charging Circuit 1 with a tracer gas to a desired test pressure; sensing via a mass spectrometer for tracer gas; selectively setting valves to seal off Circuit 2 from a vacuum test chamber; pressurizing Circuit 2 with a tracer gas to a desired test pressure; evacuating the Circuits of the tracer gas; and unloading the subject component from the vacuum chamber.