way2roll wrote:
My guess would be there isn't enough fluid in the tank to prime the pump. Either add another 5 gals to the tank or rig up a siphon to a jug directly at the pump to pull it into the system.
RV pumps are "Run Dry" pumps. if there is not enough fluid in the tank the pump still runs.. Might be heard to hear but it still runs and runs, and runs and runs. Only pressure on the outlet should shut it off and if the assorted valves are open... there should not be pressure there (Well perhaps 1 or 2 PSI but that's about it)