Not that hard. There are a ton of write ups online

 

Took a look at them and am looking for an injector now, thanks for your help will post back when I get it in.

 

Got 2 injectors coming and gonna get them in Wednesday. Question about purging the system, when I put these 2 in am I correct that I need to remove the glow plugs on those 2 cylinders, unplug the harnesses and whirl the motor a bit?

 

Got the injectors in and one still wasn't hitting, pulled it back out and replaced the orings on it, put in and its hitting now. Truck is smoking like a train goning down the road, white/blue kinda smoke. The injectors were used and I have only replaced the orings on the one, do I need to pull the other one back out and replace them? Its a hard start as well but just don't know as its my first time inside a diesel like this, will it clear out?
Thanks John

 

if it was my truck

replace all o-rings
have all injectors checked, by a shop, buying used injectors from a good take out, sometimes can casue more problems than none