I got a Ford FL 3500 Diesel Engine problem. Once I replaced injectors, solenoid switch, change engine oil, starter and alternator , fuel pump, batteries, all filters change. Thus problem as follow occurred:

The diesel is not finished burnt in engine and turns to power. Speed and power is low cannot up to 100-km/hours. Plenty of black smoke and diesel is through exhaust pipe.

Any want can help? Check from computer diagnostic , it shows no problem at all? Thanks for helps.

Sounds like an air restriction. This link should help:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-10.html#post1921427