Air Compressor: Why won't my air compressor start with a full air tank?
If the compressor won't restart after it fills the air tank, the check valve is likely stuck open. The check valve prevents tank air from back flowing to the pump. The stuck-open check valve causes high pump head pressure, preventing the compressor from restarting. Follow these steps to test the check valve:
Shut off the compressor and pull the ring on the safety valve to bleed the air from the air tank until it's empty.
Turn on the compressor to fill the air tank.
Bleed air out of the tank to reach the cut-in pressure, so the pressure switch attempts to restart the motor to refill the air tank.
If the compressor won't start with air in the tank, replace the check valve.
THESE REPAIRS MAY HELP SOLVE YOUR AIR COMPRESSOR PROBLEM
Replace the air compressor check valve
The check valve prevents tank air from back flowing to the pump. A failed check valve will apply high air pressure to the head of the pump preventing the motor from restarting once the tank has filled. If the motor starts when the tank is empty of air but won't restart when the tank is full, replace the check valve.
Air compressor check valve
How to replace an air compressor check valve
If your air compressor won't restart after the tank fills, the check valve might be the problem. This DIY repair guide and video explain how to replace an air compressor check valve in less than 15 minutes.
Most common symptoms to help you fix your air compressors
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Main cause: bad check valve…
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Most common repair guides to help fix your air compressors
These step-by-step repair guides will help you safely fix what’s broken on your air compressor.
How to replace an air compressor check valve
You can replace a defective air compressor check valve in about 10 minutes.…
How to replace an air compressor pressure switch
You can replace a broken air compressor pressure switch in about 45 minutes. …
How to rebuild an air compressor pump
If the air compressor won't fill the tank with compressed air, rebuild the pump using these steps in about 45 minutes. …
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