I'm waiting on return plugs for injectors. A gage for the test port. I already had a vacuum tester. I removed the bleeder screw and installed a tester there. I primed it and intel had the gage read 100 lbs. So. Every hour Iooked at the gage it dropped about 10 lbs every hour. Every hose and pump head looked dry. I'm guessing that it should never drop vacuum? And could the. Problem be that's the seal in the tank leaking ?