Runs Rough, Lack of Power, No Start, Hard Start - Diesel on Ford E-350 Super Duty

Internal issues with the Fuel Injector Control Module (FICM) can cause the engine to run rough, lack power, not start, or it may be hard to start. The FICM should be inspected for proper software revision and internal function. To repair, update the software, replace internal parts, and / or replace the entire FICM as needed.