Posted 4/15/2019 09:58 (#7440538 - in reply to #7440290) Subject: RE: hard starting Chevy pk
So. IL
Been years since I did one, but I think it should run about 50 psi running and it will only drop a couple pounds when you shut it off. If it drops to zero then you need a new pump. Old r12 Freon gage wil connect right to the fuel test port.