water pump runs but no water

ugh, my entire reply got eaten

Thanks for the help!

- there is water in the tank, it’s full. Fair question

- outside shower is off

- friend suggested running city water through the system to remove air bubbles/pressurize, I did, it did not help

- please explain the winterize valve on the water pump. Have never used. The pink stuff is from the factory, 7 years ago. When I flipped the valve back and forth, the pink stuff did not get sucked out. That suggests to me there is not enough pressure to do so. When I removed the cap, I could pour the pink stuff out, then fill with water, then drop in bucket as suggested, then run pump?

- I don’t see anything loose, leaking, or cracked. I understand something could be loose where I can’t see it, ie in a wall or under the floor or something, which is a project I’m not sure I’m equipped to handle. If there’s a more methodical or simpler way to go about this I’m all ears.

- where is the screen or cover that I would check for debris or cracks? I tried to attach a photo but not sure it went through.

Thanks again for the help!