I have noticed all my air pressure in the 7 gallon tank is gone every time it sits overnight or longer. It’s been happening for the last month or so so today I sprayed the back half of the plumbing with soapy water. I’m pretty sure I found the culprit so I ordered a new one today. Its the pressure switch. It’s leaking out where the wires attach. There’s no markings on it for on/ off pressure so I determined it turns off at least 200 since that’s where my gauge stops and I can get the bags up to that pressure. 200 seems to be the highest they go unless you go to an adjustable and I also don’t want to go higher than necessary or it wears out the pumps. So the one I ordered is a Viair 165/200. It turns the pumps on at 165 and off at 200.
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