When water comes out it has preasure about 2min then I lose preasure

when water comes out it has preasure about 2min then i lose preasure
If Your pump pumps up to pressure and then loses pressure it sounds like you have a faulty check valve that needs replacing. Good luck, Tom

When you lose pressure, if you close the faucet, will the pump get back up to cut out pressure (pressure at which the pump shuts off).