Fuel Injection pump, 6.2 MPI "Help"

[Wise Guy]

340 Sundancer, 2001 (inboards). 15 amp fuse located in engine harness (next to hella relays) blows. I replace fuse, fuel pump builds pressure, however, when I start engine it blows again. Engine runs for approximately 30-45 seconds.

Does my fuel pump need to be replaced?

Signed,

Wise Guy!