A few weeks ago I ran out of fuel right at the fuel pump. Ever since, my truck won't start if it sits for a few hours until I prime a small amount of air from the bleeder screw. I've read about issues with the fuel primer head, WIF sensor, fuel lines leaking, bleeder screw o-ring. I put a new fuel filter on since running out of gas. I don't see any leaky fuel lines or WIF sensor. I can't see any of the issues above happening as a result of running out of fuel. Can I worsen the condition of my fuel injectors by running out of fuel ? My truck is smoking white or light grey pretty bad when it's warmed up idling. I do not smell any fuel in the engine oil. I've also read about a high flow return rate fuel injector causing starting issues. My service engine light is on but I think it's a result from my allison throwing itself into neutral while in reverse and the "shift range inhibited" message showing up. Does anyone have any other ideas ?

My truck has also taken a little longer to start for about a year now and it occasionally has a slight lope to the idle when I first start the truck. I don't notice the lope after the engine is warmed up though.

Is it cold where you live?
Have you changed the fuel filter?
Did you try clearing the code or at least reading it.

It's cold here but I keep my truck in the garage which doesn't get below 35 degrees. New fuel filter after the problem started. I'm waiting for the UPS guy to show up with the PPE programmer I ordered, then I will check and clear the SES code. I think the SES is transmission related though.

I've been reading about guys saying they pump the fuel primer pump until it's gets hard. I open the bleeder screw 1 turn and then pump the primer until I see fuel without air, then I tighten the bleeder screw. Is this the correct way to prime? My primer pump never gets hard like some describe. I do feel resistance once fuel enters the prime pump, but it doesn't pump up and get hard enough that I can't push it.

I've been reading about guys saying they pump the fuel primer pump until it's gets hard. I open the bleeder screw 1 turn and then pump the primer until I see fuel without air, then I tighten the bleeder screw. Is this the correct way to prime? My primer pump never gets hard like some describe. I do feel resistance once fuel enters the prime pump, but it doesn't pump up and get hard enough that I can't push it.

When I change my fuel filters, I bleed the air out like you did by turning the bleed screw and then pumping the primer until a steady stream of diesel, and then tighten quickly. However, after I've tightened the bleed screw, I pump the primer several times after until there is resistance - I believe this is what you are referring to reading other posts mentioning the pump button getting hard to push down.

When I change my fuel filters, I bleed the air out like you did by turning the bleed screw and then pumping the primer until a steady stream of diesel, and then tighten quickly. However, after I've tightened the bleed screw, I pump the primer several times after until there is resistance - I believe this is what you are referring to reading other posts mentioning the pump button getting hard to push down.

yup, what he said.