Hello all. I need some insight / help here. I have just finally put back together my 6.0. I did the head gaskets, fire rings, ARP head studs, EGR cooler bypass kit, had intake heads and exhaust manifolds all ported and installed a coolant filter. Also did some powercoating to some parts to dress it up. Now all back together, and it will not start. Ran when I brought it in well with water coming out of the overflow bottle. Now it will not start? all the wiring harness connectors are in the right place and from the wiring diagrams I downloaded from AllData.com I seem to have voltage where I need to voltage at start up. I have fuel pressure. Good fuel pressure cause I changed the fule pressure regulator. But one thing seems strang, when you turn the key on, I have voltage to the fuel injectors, but when you go to start, it goes away? I am going to code the computer to see if that will tell me anything, but any and all input would be greatly appreciated. Put alot into this engine to give it better durability, and I love the truck, and the most important it is paid off and has 34K miles on it. By the way it is a late 2004, F-350, Crew Cab Dually 4x4. Lariat if that makes a difference. Any help would be appreciated since I am stumped.

Thanks!
Charlie

 

We've had a discussion about a no start after head gaskets, studs, etc. like 2 weeks ago, and I'm going to share the same experience I've had when I did my head studs.
So, I did replace my head gaskets, install head studs, new HPOP, new set of injectors, EGR bypass, new ICP, IPR, CAM, CMP , cut out the loop from the intake manifold, install Banks High Ram intake, and my truck didn't start. I checked the fuel pressure, low oil pressure, voltage, DTC-s , and everything seemed OK, except no start. So I had to use the ol' gas rag trick, and some starter fluid - what btw really hard on your engine, and right before I gave up, my truck started to run. I don't know why - probably I drained all the oil from the upper motor , and it took some time to fill the HPOP, oil rails, and bleed the air out by itself to build up the 500psi or greater oil pressure to fire the injectors. Of course it's just speculation, but I can see the possibility of this.

 

You know I was thinking of that. But I have been cranking alot. I just HATE to use starting fluid. But I can see where it could be possible. About how long were you using the ol gas in the rag trick?....

 

Well, here is what happened. I was crank-crank-cranking it for a while - I'm talking about a LONG time, not just like flicking the key. Of course I didn't want to kill my starter, so it's not like cranking it until the batteries die, but long enough to start anything what wants to start, than I clamped a high output starter/charger to the battery to make sure I'm not draining them.
Nothing, not even a single little burp. So believe me, I was cranking it a lot, I was a little hair away to give up, and call the towtruck to take it to the dealer. Then I soaked a rag with gas, and stick it in to the air intake without the filter on. The fume took care of it, it started to turning on it's own - I meant on the fume - and it sucked in the rag, and it broke my MAF sensor, so next time Iput a big!#@ rubber tie on it to avoid this. When the motor turned around I jumped and pulled the rag, and it did rev up, then died. I continued doing this, and after the 4th or 5th time it was running on it's own. Really poorly, than 30 seconds later the motor started to even out . I let it run for like 5-10 minutes, then try to restart, fine. Did it a few times, than disconnect the batteries drain the PCM memory, connect it and I did the VGT relearn.
I was really excited, and took it for a test-drive. No longer than 1 minute on the road, my truck died, with no restart. Walk home, grab some starting fluid, walk back, pull the filter reminder spray some in and crank it. It started, but the baby was running really weird, like my idle is around 200, but smooth and there wasn't any "diesel knocking" sound. Just like a gasser. Push the pedal, and it it revs up just like everything is fine.
Since that my truck runs like a champ, and now I have no problem to floor it, and show the "little" cars how you take off at the green.....

 

I am going to try that. I pulled my ICP sensor since it is a late 04 and there was NO OIL. So with reading what you said, that maybe it does take a long time for the high pressure rails to get filled with oil and pressure up? The high pressure tubes do have a very small hole in them not letting alot of oil at all into the rails. Well I have given up for today. I will start again tomorrow. I have no issues using the ol gas on the rag trick. But you used gas and not starting fluid right?. Also did you disconnect the power to the glow plugs while you was doing this?

 

I don't want to say that this is exactly why your truck does not start, I'm just saying that it happened to me, and finally I started my truck, and that's why we are here to share the info to help each other. If it isn't it, than I'm sorry to misleading you.
You mentioned something about injector voltage missing, that's why I said the above.
Yes I used gas on the rag to start it , the starter fluid was on the side of the road after, because my truck stopped at a busy intersection, and I didn't want to pour gas on a rag than stick it in to my truck at front of a bunch of people - you know. And no, I didn't disconnect my glow plugs. Maybe I supposed to, but I didn't. I'm not sure that the gas explodes under pressure, but maybe...
Good luck, and keep me posted....

 

Well today is another day. I will try what you tried. I again looked over everything even pulling the valve covers to make sure I have the high pressure tubes installed correctly. Really can't screw this up, but you never know. Honestly the whole enging really only goes together one way. You could put it together another way with the healp of a BFH, (lol), but not my style. I will keep you posted. Thanks for teh reply!

 

Well I tried the ol gas on the rag. Well showing some promising signs. Did it 3 times so far and it seems it wants to start. But you said it is going to take a bit more times. But it did start somewhat, run rough. One time it started and went straight to 4,000 rpm then down to maybe 200 rpm but smooth then stalled...