"only a small amount of air" how are you defining small amount? Is the pump new or used? A used pump may need new vanes which is why it might have been sold as a used pump. Do you have a good low pressure gauge (30psi) on the pump? PSI should easily build to 15-20psi. Do not completely restrict the air flow to cause 30+psi or the carbon vanes could break which is why we install an adjustable pressure relief valve.
Last edited by Bill Cody; 06/27/16 07:13 PM.
