Lost Sheep wrote:Mine, during inflation, makes a vibration/sound similar to the sound it makes when deflating. But the sound/vibration is only momentary and definitely not every time. I suspect I am partially depressing the deflate button. When I am careful to only be in contact with the pump bulb (and not the valve body) this never happens.
That vibrating sound you hear is perfectly normal. That is the sound it makes when deflating. You say "not every time"... that is strange.