air comp motor went out

I've been an electrician for going on 40 years now, hence my username lol! From the information I get, I would definitely say you have a blown capacitor. Sometimes, and I mean SOMETIMES the governor will stick open. It would be worth a try to take a hammer and a punch or drift pin an tap the end of the motor shaft a couple of times. If that does not work , you will have to check the caps. They are usually found under the "camel hump" covers on the motor. If you have this type of cover,take the cover off and visually inspect the cap. Start capacitors are usually black plastic. Look for any obvious signs of leakage. If a capacitor "blows", internal pressure builds up and is released through the end cap. The end cap will have a round hole in it with what looks like cardboard behind it. Usually, it is pretty obvious, but sometimes, it will have a barely perceptible pin hole in it. If you see any of this, then the cap is bad. If not, you will have to check it with a capacitor testor. Many multi meters have the capability to do this. If you can't do this, take the cap(s) to a motor shop. They will gladly check them for you, and sell you a replacement.