From all my taps on my 2001 B361 the water is coming out in bursts as if there is trapped air somewhere in the system, but I can not find anywhere to went the system.
You most likely have a air leak on the suction side of your water pump. Trapped air acts like Woodster's accumulator.trapped air
That is the size of the largest standard sporting boat accumulator. It would take about an air volume of ≈1 liter to act like an accumulator's diaphragm, to get that water volume ( 2 cups) out.still could get over half a liter out
After reading some of SBO posts, science fiction was included.science or science fiction