Bleeds off air as it builds up pressure, causing longer run time. Sometimes it continues to bleed air pressure after tank reaches maxime pressure then not letting motor to restart
Air Tools & Compressors - Porter Cable - C2002 150 Psi 6 Gal Compressor
Answers & Comments
Your tank check Valencia is bad or dirty.
This compressor has a bleed valve under the tank. It is used to drain pressure. It may be cracked open.