When we use our water pump we get a lot of air in the line, it spits & sputters. Have ckecked for leaks & found none. Makes it diffucult to shower or fill the sink. The holding tank is full. Any idea ...
Could be loose/cracked fitting at pump or pump casing Could be loose hose clamp on suction line Could be cracked suction filter/strainer Or not screwed on tight Could be sucking air thru winterizing valve/line (if you have kit installed)
Somewhere on suction side of pump is allowing air to be drawn in when ump is running.