I have worked on a carlyle compressor and replaced stator. Upon start up everything worked fine until i noticed excessive vibration after 20 min.
Upon further checks I noticed that the unloader was malfunctioning, correct this probelm, only to find out the next day that the discharge valves on both heads were broken.

Replaced valves and the same probelm the next day.

any ideas, I am at a loss, simply do not know how to approach this probelm.

Thanks