Have early 2004 6.0 in 2004 f350. Just bought the truck started out hard start and then it would die when warmed up. And would not start till cooled. Have changed hpop the stand pipes, icp, just about everything on high pressure system. Just changed orings on rail injector side on driver side, thought I may have a leak there. Started it and let it idle for 3 and 1/2 hours no problem. Put it in gear and truck died would not start again till cool.
Hooked it to the ae today and let it run first started the icp desired and actual ran 752 till it warmed up then they dropped to around 638 the actual stayed with in 8 lbs with the desired. Ran it for an hour, killed it an no start. The icp showed desired 1303 and actual 420. Unplugged icp desired showed 25 and actual 1305. Let it cool a little and plugged icp back up and it fired off.
While I had the ae on I also monitored the cmp and ckp in sync it was 0 t0 a red 1.
Also had inj timing stared at .59 then after about an hour it went to -3.45.
Any suggestions? And what else can I monitor.
Thanks

 

have you done an air test on the system? you definately have a leak somewhere, you will have to leave the air hooked up for a while because the oil will have to come out of the leak first and you won't hear that. did you replace any injecttors lately? I know of several people that had a problem with a new injector to find out that the oring in the top of injector was missing, a torn one will do the same thing.

 

No I have not done one but I did pay a mechanic to do one and he said there were no leaks.
What is the best way to do one.
Alton

 

the very best way to do one is to pull turbo and valve covers, then use the adapter that screws into the ICP port and pressurise the system while usind some leads to energise the IPR to close. with a nice brite lite look at the oil rail to injector points and see if you see any air bubbles or or oil flowing. On the 03 and early 0 trucks there is a "ball" on the side of he HPOP that is used to seal a port, it is on the drivers side of pump down low, after doing a air test pull the pump cover off and ue your finger to make sure that ball is still in there, it can cause the same problems you are having, people have fixed it by tapping the port with a 1/2-20 tap and installing a allen plug with locktite on it. also if the ball is missing make sure you find it, sometimes it is sitting right next to the pump and other times it is in the area of the lifters, or even the oil pan.

---AutoMerged DoublePost---

2004 6.0 Hpop - Bing Images

 

Finally got around to working on the 6.0 again goy the plug in and hooked a 6 volt lantern battery to the ipr, but it does not make a clicking noise when I plug it in. When I turned to air on I could hear air through the return line from turbo.

How much voltage does the ipr need to work. Will a full 12 volts from truck battery be too much?

Thanks

 

You can command ipr with scan tool or otc makes a stand alone tool that plugs into the ipr and connects to your trucks battery. i like to have air already entering system before i energize the ipr so I can listen for a change as the duty cycle is increased. Has the IPR been replaced?

 

Yes twice once from napa and everonee said they were no good so replaced with ford. I have a plug so the irp so it will be ok to connect it to battery?

---AutoMerged DoublePost---

Got it hooked up but do not hear any different in the air from the turbo line but I can hear bubbling from the back two injectors on drivers side and the front inj on pass. side

 

you need to monitor ipr% vs icpA, did you also replace the oil rail dummy plugs? they are the most common failure items especially with rotella oil

 

I have replaced everything but the pipe that goes out the back and to the stand pipes. Have also replaced two of the o rings on two injectors. Will pull the rail and redo all the injectors.

 

its best to do testing before taking stuff apart because you can add more variables! you might need to isolate the hpop for leak testing and each head separately