Irregular pressure switch activities

Sometimes when the pressure drops to the cut in pressure the switch will not come on.
This can happen when there is a lot of use or when there is no use, it is irregular and no pattern.
I thought the pump was going bad and couldn’t keep up with demand but when the switch is working okay the pressure is fine. I replaced the switch and pressure tank recently because the old tank was waterlogged and the pump was cycling too much but now it occasionally loses pressure and won’t kick on. Any thoughts?

 

Is the pressure switch just slow to respond? The nipple or switch could be clogged.

Does the pressure switch click to turn on the pump, but the pump does not start right away? That could be a weak start capacitor for the pump.

You can look at the voltage to the pump with a multimeter. When there is proper voltage to the pump at the pressure switch, but the pump does not start right up, it is not a problem with the pressure switch.