Have a 2006 f250 6.0 diesel. Cranks tries to fire but as soon as you let off the key it guites. Next time you crank it no fire just cranks.

Bad ignition switch?

If necessary, perform the additional tests below:

https://www.askmehelpdesk.com/cars-trucks/faq-how-troubleshoot-repair-maintain-hondas-selected-other-vehicles-46563-8.html#post1415281