Andy,
Try this post.
air purge instructions
The info you need should be there.
As for the GP's, I'm not sure I can help too much. My glow timer dealy was pretty much done for so I traced the little blue wire back from there and ran it to a push button switch. As soon as the little blue wire is grounded the GP's should come on. I would imagine the CUCV's are similar as the GP's are 12 volt IIRC.
Think of purging the air like you think of bleeding brakes. You need to apply pressure at one end and open something up at the other end. If you're starting with a dry system it's going to be easier to do this in sections. First section would be to get fuel coming from the lift pump itself. That's easy...disconnect the pink wire from the IP, disconnect the fuel hose between the lift pump and the filters, remove all the GP's (it'll crank 100 times easier) and crank the motor over until fuel comes out. Now you know you're good until that point and have confirmed the lift pump works.
Next, pre-fill the filters with fresh clean diesel, hook up the line supplying the filter(s) and unhook the line after the filters and crank again. You now have no air between the tank the the engine side of the filters.
The last part sucks. Ensure all the lines are tight and connected. Re-attach the pink wire to the IP. Loosen all the injector lines and have a helper crank the motor in 15 second bursts while you watch the loose injector lines. Remember to let the starter cool for a minute or so between cranking. As soon as one begins to drip tighten it and watch the rest. When 7 or 8 have dripped you have 95% of the air out of the system.
Re-install the gp's, cycle them and try to start the truck. Remember you need really good cranking speed, so if the batt's are getting weak you should probably make sure they are 100% charged.
At this point it should start.
Rene
