josh fired this
volley in oups.com:

When I gave the
fan
a twist the motor started running the compressor. However, the motor
won't start the compressor on its own.


You never said anything about checking the unloader valve.
The Emglo compressors ALL have unloader valves (most compressors do), and
the compressors don't have a hope of starting up with any residual
pressure in the tank unless it's working.

LLoyd