How to Stop an Air Leak With Fix-A-Flat Spray
- 1). Remove the valve stem cap from your tire.
- 2). Screw the nozzle on the end of the Fix-A-Flat hose to the end of the valve stem on the tire.
- 3). Press down on the large tab on the top of the Fix-A-Flat can to discharge the contents of the can into the tire. The tire will inflate enough for you to drive the vehicle.
- 4). Unscrew the nozzle and hose from the end of the valve stem. Replace the valve stem cap.
- 5). Drive to the nearest location to get the leak permanently patched.
Source...