Failures on big bore engine are much less common due to there much more simple design. Thats what i has originally thought was a broke rocker until you said they replaced all of them. Spunds like you do have a issue with your truck if it was doing crazy shifting. The ecm does control the trans too so im thinking now thats where your problem lies. Bad thing about that is its very hard to diagnose a bad ecm or short without all the nice wiring diagrams ford has. They also have breakout boxs too and dont have to poke holes in wires or back probe like we do. Its best when you get it back is to check for active codes cause if its running awful it has some code and start there. You can even get yourself a cheap code reader to DIY. If all else fails just take it to ford. My friends used to try and take their stuff to local guys and its just best to go dealer and get the serivce from guys who know those the PSD well

 

How was the fuel pressure?
JEV

 

Im in orlando but Im stuck working 24/7 man, Sorry I wish I could help but I cant get that much time off from work.

 

I dont think they checked it. I did'nt
As soon as I get it home I will start checking everything.

 

Franko72 im sure your right that there maybe a short coming from somewere... but id hate to sit back and not mention that i had i guess what seemed to be the same problem ... well one day my truck was running fine and the next it seemed like it was lackin all of its power it came down to a crawl and it felt and sounded like my injectors were going out ... After a lot of checking under the valve covers for voltage readings and messed up injector wires i came to find out my fuel pump was the culprit... Now this is were ur problem might be different from mine if i would shut the truck off for and hour it would i guess let the pump cool down and run right for another 30 mins... and then run like crap again... so i just wanted to point that out. again good luck on ur truck n dont give up....

 

That reading seems off to me, if reading correctly you should be getting ?110V?(dangit this was just covered and I already forgot) on the "hot" injector wires.

 

Just to throw something else out there, double check that all your injectors are seated completely into the cup. I was down in DFW with Tony W for live tuning, and headed home about 10:00pm, got about an hour away and all of a sudden the motor felt like it ran out of fuel, but still over 1/4 tank on the gauge. Luckily I was able to limp it along about 45 mph to the next fuel stop, topped it off,and then I barely had any power to pull away from the pump. Spent the night in the truck at the stop. Ended up being one of the injectors worked loose, and I'm assuming it was just dumping all the fuel and oil into the cylinder, releasing any and all fuel and oil pressure. What you have sounds kinda like what I experienced.
If it was the injector that was bad, it ought to still run. Make sure when they replaced the #1 injector that they got the brass washer out from the old one. Hopefully they don't have it stacked two high.

Good luck! I know the feeling of being stranded! I'm lucky we got to that truck stop when we did, because there wasn't another one for 40 miles past it.

 

Thanks Adam, I did'nt even think of that. It one more thing I'll be checking when I get her home. Im chomping at the bit!!

 

I thought about your issue that you told me of annd dug through my . notes at work. I was thinking today of a issue similar to what you describe. A customer complained of a small tick on a 444e in a school bus and some other guys looked at it and removed rockers replaced lifters and injectors. This was one of the last 444e engines still in warrenty to. So finally the bus started running awful and it had no codes at all. So when it came in this time i got to work on it the bus would hardly move and smoke all kinds of smoke blue and white. I looked it over while someone cranked it and the ticking was coming from the front cover area. I removed the Cam senor to finding the head of it was all ripped up. The cam sensor was not shimmed and was hitting the sensor. I replaced the sensor with correct gapping and the bus ran great. This may or may not be your issue but its just one of the issues i have occured. Hope it helps

 

I had recently replace the grey Ford cps with the black International cps. and the ticking seemed to go away but then returned 3-4 days later. It got louder as the engine warmed up...Just as the TSB describing the #8 injector tick stated. (another reason I did'nt get too worried)
The "tick" disapeared when #1 injector quit. (At least I think) The repair shop had it running (rough of course) after the injector install and there was no ticking. BUT, the engine was cold, It may have returned when it warmed up????
Thanks for sharing that story with me, The cps is on my list of things to check when I get her home.

 

I think Bennie (another member here) is in Bradenton, FL. You might PM him. Maybe he can help you out a little.

Hope that you get her going.

 

i to think you have a electrical problem. i would start by checking all the sensors connected to the fueling system. you may have a sensor grounding out that could not let the shops scanner talk to your pcm.have the shop hook up the scanner and start unpluging sensors one by one to see if communication is reconnected between your pcm and their scanner.try the high preasure oil sensor first.

 

What did the smoke smell like? If it is fuel, it could be MAP causing engine to overfuel. You may be able to unplug map sensor and see if it helps. Another quick thing to check is the connection at the ecm at firewall, and one more quick check is to make sure harness is not rubbing on drivers valve cover and shorting.

 

I added your suggestions to my list. Thanks for the input.

 

I just lost some hope, I found this video, and it is EXACTLY what my truck sounds like. Smoke, stalling in gear and all....


YouTube - Bad diesel problems