won't start after engine cooler

[Str8Ugly]

its a 2003 ford f350 6.0... has a super chips flashpaq programmer..

truck was hard to start before i brought it inside the shop(long time turning over plus missing once started)

so i just replaced the engine oil cooler got it all put back together go to crank it up and it won't start at all

turns over but won't start... i undid the fuel lines and bled them off thinking that was it, didn't help..

used starting fluid to see if that would help but still wouldn't start... im kinda scratching my head on this.. i have no idea what it could be... any help on this?

very much thanks appreciated

[miles97]

How long have you cranked it can take 5-7 30 sec cranks to get all the air out to the system.
If that is not the case i would pull the IRP valve out and look at it.

[Str8Ugly]

found the problem after reading around i found out that the injectors werent buzzing when i turned the key on... a terminal on the ficm was unplugged