My 1999 Ford f250 diesel will not start this morning. It ran fine yesterday but after plugging in to warm the oil and charging the battery it still will not start.
Any hints. This is the first time I have had any trouble starting this truck.

Hopefully, this will help:

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

Poleman: High pressure oil pump under turbo on valley (provides energy to push fuel through injector). After checking fuel filters, lines, tank cap and lift pump.