Just got back from a few days camping in Big Sur. Although I had 6 gallons
of water in the drinking water tank, almost no water would come out of the
faucet when the tap was opened. It would not pump any water initially, and
after a delay of a few minutes a bit of water would pulse out and then stop.

There was plenty of power available - the dual battery system was fully
charged. Is there any way to tell whether it's a faulty pump in the water
tank that's to blame, or if it's the faucet itself?

Cheers,
Chris Paquette
'88 Westy, "Rocinante"