first check your battery voltage and if good usually the fuel injection selenoid is suspect(hard starting ,surge, hesitation and stalling)
I'm no expert, but my friend had a similar situation in a carburated Toyota due to a clogged fuel filter. Fuel filters need to be changed every 30,000 miles or so. It's a cheap and easy fix - try that first.
== == 1) add fuel to the tank 2) fill the filter 3) crank it for 15 seconds, wait 15 seconds 4) repeat step #3 5) repeat step #3
Fuel? spark?
If the engine cranks & cranks & cranks before it starts even though it's warmed up already.
Have the intake air temp. sensor checked .Two wired plug on top of intake manifold. Check fuel pump pressure.
Check for codes(possible cam sensor), check fuel pressure bleed down(possible fuel pump).
I would add fuel to the tank, and then use the fuel pump relay to prime the system. Good luck. add fuel to your fuel filter and put it back on and should start. On older diesel engines dont worry about the fuel pump relay. Add clean fresh fuel to the filter and hold the pedal to the floor while cranking and it should start.(release pedal when it starts)
A diesel engine uses the heat of compressing air to ignite the fuel instead of a spark plug like a gas engine. When it is cold it takes a bit to get enough heat to get it to fire. Ford diesels use a glow plug to heat the air when cold starting, but on a Cummins they don't use them. A simple block heater should make it easier to start when it is cold.
if its cranking but not starting most likely fuel pump
What year? What is it doing? A 12 valve has a fuel shut off solenoid that commonly malfunctions, the engine cranks but never starts.
could be disdributor
Replace the engine coolant temp sensor.