sears 5 hp 25 gal air compressor oil free runs but no air

hello, my name is Susan I am trying to pump the tire on my Chevy truck up just to make it to tire shop I have a slow leak in tire. I am using my late husbands old air compressor but un able to fill tire the compressor comes on just runs and runs but no air could you please help me and have patience with this old woman and yes I really do not know what I am doing but I am trying thanks

Susan, there are many reasons why an air compressor will run but not build air pressure. That your Sears compressor is running but not building air is indicating that there is likely a mechanical issue with the pump, at least, that's the most prevalent.

If you wish to investigate further, please follow the troubleshooting link under Air Compressor Issues in the left nav bar, and see the page about air compressors that run but don't build pressure.

Cheers and good luck, and add a comment here if you have more to add.


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May 21, 2014
no pressure
by: Doug in


Sorry for your loss.

There's a good chance your hubby left the tank drain valve open.

It should be near the bottom of the tank. If you feel air from there when it's running, turn it to close.

Good luck.

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