Posts: 38,335
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Joined: Feb 2002
Location: Northern California
how long ago did you replace it?
I seem to recall the last time I changed my pressure tank (been a couple of years), I ended up draining most of the water out of the house pipes...it took a while to get all the air out of the tank and the lines.
same thing when I changed out my water heater, had air in the lines for a while.
Reality is that which, when you stop believing in it, doesn't go away. - Philip K. Dick
Mark
Posts: 5,732
Threads: 2
Joined: Dec 2004
Location: Fort Worth
The pump may be cavitating with the longer run time to fill the new pressure tank due to insufficient water in the well.
Try running the pump for a minute or so then shut it off to let the well recover. Then rinse and repeat until the pressure tank is full. Then slowly let water out of the tank till the pump comes on. Do that for a bit and see if it takes care of it.
If it is cavitating you will be able to heat the change in pitch of the pump. And once you start to hear it shut it off and let the well recover.