1988 f350 7,3 diesel on 1990 Ford F-350

If I don't start the truck daily oritsits formore than 10 hrs it won't start. runs smooth as silk when it warms up. no missing is there a check valve that allows air into the fuel lines because it sounds like it is not getting fuel, once it starts it perfectly fine, only does this when it sits.

2 answers 1 comment
Glow plugs or circuit problem. Do you know what a glow plug is? What is your skill level say with a DVOM?
(Multi meter)
go to school
And have green jelly at lunch time.