I cant get a break

[kbomb2788]

Hello every one...Im venting...

I cant get a break on a side...I got 05 6.0L...Customer brought it in for a miss (i wasnt home so did not see how he got it there) I started in morning (after checking ficm v, batteries, fuel pressure) and #8 was droping out as well as couple of others (83k on truck) I decided to be a nice guy and drive it to check if any others would drop under a load (it was a manual and only could load an engine so far) so i got on  a street and drove 200 yards and it died on me (icp and ipr were ok at this time...felt like air getting into a fuel or combustion gasses) so that sunday i spend 30 min getting the truck back to my house under rain. So i got home and replaced the three injectors (8,3, and 1) started the truck up and ran ok...Under test drive #4 started to drop out and vehicle was shacking. I got to a shop i work out of and turned the truck off thinking its air trapped or computer not compensating correctly for a fixed injector (sometimes after injector replacement the truck would run rough until key cycle.) I shut it of and tried to start it  and its just cranks no start (icp at 290 psi with ipr all the way up 85) I cursed and left the truck thinking i nicked an o ring or something while doing injectors. The next day I got into truck and checked the pids and it fired right up...it got worm and i shut it off and tried to restart right away and it just cranks and no start (now i have done plenty of hot no start but usually you have to let them sit for a 10-15 min before its a no start) So i thought it must be ipr valve. I replaced the other injectors that were having a miss and ipr valve. Started the truck..Runs great...got the power...no miss. Shut it of and tried to restart and @#$ @#$%!@ the @#$%^ would not start again. I dont have my air leak tester but i suspect SCT fitting, just never seen a truck not restart right away...(the stand pipes and dummy plugs have been upgraded)....

Second truck is a 2007 6.0L...No crank...wrench light is on and check guages message on dash...and no inj clicking when turn the key on...Could not hook up to a truck...performed tear tag procedure...network test pcm tcm fail and ic u1900...Could not program the truck and unpluged diffrent modules and components (fan clutch, icp, maf sensor) (truck is a manual) So i do my network checks...voltages...resistance and everything checks out ok. Checked power and grounds for both pcm and ic and ok. Customer got a used ic. Hooked it up and finally was able to program the pcm...and music to my ears i hear the inj cycling... got all excited, went in house told my wife im almost done...go back out...try to do a pmi for ic and does the same thing...#@$...I do several PMI attempts with all fails...restart ids...one thing i did notice that when i turn the key on and the inj doesnt buzz ill cycle a key a few times and they buzz and i can start the truck...what ta hell is going on and dont let me start on a 7.3 that i have...Mind this that at work i have no problems it being a 7.3 or 6.0 or 6.4 or 6.7 but at home...what ta crap