First, plug the car tyre inflator into a 12V car socket. Most air pump for car has a long cord to reach the wheels. Keep the engine running to avoid battery drain.
Before starting, inspect the tyre. If the tyre has a major puncture, don't fill it because it won't hold the air. In this scenario, use a spare or call for help.
Connect the compressor's nozzle to the tyre's valve stem to inflate. Check connections before starting the compressor pump.
Turn on the car tyre inflator to inject compressed air. If you hear hissing, turn off the inflator and tighten the nozzle and valve stem. A hissing sound indicates a bad connection and an air leak.