new water pump losing pressure

Mjhave

we had our water pump replaced by NuCamp service November 2024 and they reported it working properly.  we were able to winterize with it.
now in spring 2025 the pump will build pressure to the point where it automatically shuts off like it should.  however, when an outlet is opened the water flows with normal pressure for a while (~15-30 seconds) and then trails off to a trickle.  any thoughts would be appreciated.

BridgerSunset

I assume you're  saying the pump remains running as the flow "trails off to a trickle".  So it seems then that your outflow is outrunning your pump's ability to keep up.  If no leak is evident on the discharge piping of the pump, it may be a restriction in the suction side of the pump - perhaps the screen in the plastic bowl right before the pump?

dsfdogs

Assuming you have a trailer with the Nautilus system, ensure the valves are correctly pointed for "dry camping".