Craftsman will not stop running.
I have a dual tank craftsman air compressor and is hardly ever used, but one day it stopped building pressure up to 20 psi.
After it reaches 20psi it will keep running.
I checked for leaks and pulled the top of where piston is located, but did not see any damaged parts.
Like I said this air compressor is fairly new even though it was bought over 6 years ago. I have only used it no more than ten times since it was bought.
Checked oil also was correct.
I researched around stating in might be check valve,I'm hoping. Please help!