TRANSIT T350 125PS.ENGINE TRANSPLANT NOW WON,T START?

I BOUGHT A TRANSIT WITH A BROKEN CRANK,PUT IN AN IDENTICAL MOTOR NOW IT WON,T START.I TOOK IT TO MR FORD WHO REPROGRAMED THE KEY BUT NO JOY,HE SAYS I HAVE TO SWOP THE INJECTOR PUMP FROM THE OLD ENGINE.
SEAMS LIKE A LOT OF WORK,CAN ANYONE HELP RATHER THAN SWOPPING THE PUMP?