My Craftsman 12-Gallon 1 HP Model No. 921.166400 Compressor Won't get above 20 PSI in the tank

by Web Tileston
(Annandale VA)

Compressor is only about 1 1/2 years old. Has been used very seldom. Just use it to rotate tires every 7000 miles on four cars and to do some nail gun work. All of a sudden the pressure in the tank doesn't get above 20 PSI. We checked the head bolts and performed some leak checks with soapy water. Haven't found anything. Any suggetions? Thanks. Web





Bill says...

Hello Web. Compressors that won't build pressure seem to be in fashion these days.

Based on the trend I'm seeing, I'm guessing valves or internal gaskets have failed and air is leaking out the intake valve as fast as it's being compressed.

Did you see this page on on why compressors commonly don't build pressure?

Good luck.

Bill






Comments for
My Craftsman 12-Gallon 1 HP Model No. 921.166400 Compressor Won't get above 20 PSI in the tank

Click here to add your own comments

Jul 06, 2011
 Air coming from crank case.
by: Kevin from Charlotte NC

The air isn't coming back out of the intake but is blowing out of the crank case.

_____________________

That would suggest to me that you have piston seal issues.

Click here to add your own comments

Join in and write your own page! It's easy to do. How?
Simply click here to return to Craftsman Compressor Issues