Why your bicycle pump will not air out?

Clogged Valve: The pump's valve might be obstructed, preventing air from flowing smoothly. Examine the valve for dirt, debris, or damage. Clean or replace the valve if necessary.

Loose Pump Connection: Ensure the pump is firmly attached to the bicycle tire's valve stem. A loose connection can result in air leakage and make it challenging to pump air into the tire.

Damaged Pump Head: The pump head might be damaged or misaligned, Preventing proper sealing with the valve stem. Inspect the pump head for any damage or deformities. Ensure it fits securely onto the valve stem.

Faulty Pump Mechanism: There could be an internal issue with the pump's mechanism, such as a broken piston or worn-out seals. This can hinder the pump's ability to generate air pressure. Consider having the pump serviced or repaired if you suspect a mechanical problem.

Old or Damaged Hose: If the pump has a hose, check for any leaks, cracks, or kinks that might restrict airflow. Replace the hose if it's damaged.

Stuck or Broken Valve Stem: The valve stem on the bicycle tire itself might be stuck or damaged, obstructing the flow of air. Inspect the valve stem for any issues, and consider replacing it if necessary.

Incompatibility: Some bicycle pumps are designed for specific types of valves (e.g., Presta or Schrader). Ensure that the pump you are using is compatible with the valve type on your bicycle.