2006 f250 6.0 powerstroke. Egr cooler went bad, was replaced also oil cooler, fuel line. New fluids, starter and good batteries. Truck acts like it wants to start but won't turn over. Showing no codes and was hooked up to computer and showed nothing. Also showing oil pressure on dash board. Could the oiler cooler need primed or maybe and vacuum leak in the fuel line? Totally puzzled.

 

What fuel line was replaced and why? No other work done? Are you getting fuel pressure? A quick check to see if you're getting some fuel is pull the fuel filter out of the bowl on top and turn the key forward and see if it fills.

You say it acts like it wants to start but wont turn over? Is it just not firing, or is it not turning over. To me, not turning over means it's not cranking. If it's not cranking and you had a failed EGR cooler it's possibly hydrolocked. If that's the case, pull the glow plugs and turn it over.

 

Fuel line that connects into the fuel filter housing. It does crank just doesn't start. Read something about unplugging the ficm and turning key to prime oil cooler. Is this something that could be tried? Will check fuel like you said.