All piping and connections look okay. although I don't like the manifold. I prefer adjustable ball valves on the manifold to precisely regulate and distribute the air flow. Good advice from esshup and 1/4ac. If the pump does not create 4-5psi then it is a pump problem. Take the top off and see if there is an air leak somewhere or loose screw of a fitting. Maybe the diaphragm is cracked? As long as the pump is humming the diaphragm is maybe cracked or damaged. They sell rebuild kits that include a new diaphragm for that pump.
Last edited by Bill Cody; 09/13/21 08:09 PM.
