quote Wyo307:
Can I test that it is holding pressure by plugging off the fuel side of the line and then blowing air into the air line? How much pressure should I put in the tank?
Yes you can. I’ve done it like that with a pressure tester. I use it for testing lower units also. I just swap out the hose with one that has a fitting for the lower unit. Just 3-4 pounds is usually sufficient. If it’s losing air you can squirt sudsy water on the screws, button, gasket area, etc. to pinpoint the leak.
image hosting 10mb limit