So I just got my boat back from having a new engine put into it, plus a full closed cooling system. I went on it while it is in my driveway, turned the batteries on, turned the ignition over to the acc key. I then proceeded to try out the bilge pump, but could not hear it working. Should I be able to turn it on manually and hear it trying to run? They re-positioned it before they put in the motor, and I don't think I can get to it, because of the closed cooling unit. But I should be able to hear it run, even if there is nothing in the bilge right?