Check the pressure switch. Mine has a red triangle shaped lever on the side of it which will turn it on(maintain pressure) and off.
Since the load was on when you plugged it in, then it should be ok. Just make sure the outlet and cord isn't getting too hot to holdin your hand.I just plugged my air compressor into a 110 outlet in my garage and noticed sparks. The compressor is running ok and the sparks stopped when I shoved the prongs into the outlet.
Should I be concerned? Should I replace the outlet?
The compressor is 110, not 220.
Thanks.