6 yrs old, 243 hours. Suddenly 3/4 of the tank of diesel is gone in 5 mins, runs dry. Couldnt find fuel leak. Put more diesel in to find it, used primer pump, and the 2 gallons i put in is gone, but not on ground. Pulled oil dip stick, that isnt oil in there. Drained oil: full of diesel fuel. Is this a bad injector(internal) pump? Is this a big and $$ fix? any info appreciated!
