You probably don't have a fuel line leak if the truck runs. A fuel line leak would suck in air causing the engine to quit.
your high pressure line may be leaking, but there should be diesel everywhere in the engine bay.
do the same thing as the previous guy and test for drag on a wheel, or through the driveline
your high pressure line may be leaking, but there should be diesel everywhere in the engine bay.
do the same thing as the previous guy and test for drag on a wheel, or through the driveline