I have a 60 gallon air compressor that I got to free.
My employer had it in Storage for a while.
I finally got it wired up with 220 and it runs but it doesn't
Build pressure. Any one have an idea what to check next.
assuming the pump is turning (not abroken belt or something) , pull off the line from the head to the tank and see if there's pressure there when it spins. if not the pump is toast. if yes, there's a leak downstream of that