The most basic symptom of a small leak is a compressor that runs too much. If it runs 30 percent or more, or if you hear it cycling while sitting in traffic or when idling with parking brakes applied, ...
Diagnosing a faulty compressor valve is something HVAC technicians have to deal with on a semi-regular basis, and while a bad valve is often not the main reason a compressor fails, it is an integral ...