i bought a used fx5 a while back and it has never really worked right from the start. so today i noticed it making a funny sound and only pumping out a little water so i took it apart and fiddled around with it nothing appeared to be wrong, so i filled it back up turned it on and it worked nice for five minutes and then died. so what do you think get a new motor for it? is there anything else it could be? any help would be great thanks