Hello. I can't understand why my Fuel pump isn't running on my Patrol y60 gr from 96 2.8TD. It's dosne't takes the fuel from the tank, up to the fitler and in the engnie. But if i fuel the Filter, up with Diesel. it's can suck it in to the enigne. But it dosn't keep sucking it to the enigne, from the tank :/ anyone had that problem?