Sears compressor 12 yr old does not inflate and ....

by Ferdi
(Houston, TX.)

My Sears compressor cutting-off pressure is not working.

Also when trying to inflate the tires of my SUV it isn't doing anything even though good air flow is coming from the inflating adapter.

The tank pressure gage is set up for 120 CFM. It goes up to 140 or more and then the safety valve kicks off and the tank is depleted to 80 cfm.

The out-pressure valve is set for 100 PSI which should be enough for my tires and for my compact wrench to operate but also I'm not getting enough power out of it.

What could be wrong? Does the air hose diameter have anything to do with it? I'm using the original which I believe is a 1/4 or 5/8 rubber hose with a nylon sleeve.

Thanks for the help.