I'll bet it's gelled. I know I'm going to hear about this,but here goes. Go get some seafoam and suck all the fuel out of the second filter(up top on the motor). Pour it in there(good time to change the filters if you already haven't). Close it up and open the Primary filter and let it run out. take the plug out of the water separator drain and get some carb cleaner and blow it out,make sure you still have the filter out. Change the filter and re assemble. Cycle the key 3 or 4 times to get the fuel up there and give it a crank with hot batteries and being plugged in for about 3 hours. I bet it will start. A torpedo heat and a tarp would help too. Good luck! Winter sucks.........

 

I agree .....150 - 200 RPM is good, but he must have some awfully thin oil, a starter with mega torque or something's loose in those cyl cavities..........

Man I love Texas -- relatives in Bastrop area --- beautiful rolling hill country.......

 

I wanted to close the loop on this thread and thank everyone for their responses. I pulled the injectors and all eight are seized.
I've installed eight new injectors and when I turned the key the injectors all cycled. The truck started right up in the forty degree weather.
The mileage on the injectors was 148k.

 

Thanks for the update- it'll hopefully help someone one of these days when they're searching for answers on a similar situation.

 

Wow, I have never heard of all eight failing at once. Glad you got it resolved!

Just odd there were no contribution codes?

 

And my question is is that a 48volt FICM.

 

Wait, all 8 at once? Yet you said it fired on WD 40. I’ve reread this thread twice nothing is adding up. 230 rpm cranking? I guess I’m missing something.

 

Wondering if there was any conclusion on why all 8 siezed?

 

I'll go out on a limb here and say what others are probably thinking. This was either a wiring issue and the act of replacing the injectors cured it.......or it's the first time in the history of the 6.0 that all eight injectors seized in unison...or the OP left something out of the narrative

That said, I'm no master mechanic

 

Might have seized up with wax from cheap fuel. I'd have to see them.

 

Which brand of injectors did you use when replacing them?

 

I like this thread but it's confusing me and am hoping I can learn from it.

In your diagnosis did you look at the IPW - injector pulse width - while trying to start? Any idea if starting IPW is computed or mapped? If you are monitoring IPW does it show a reading during a Buzz Test?

Can you look at an injector and determine that it is seized?

Thanks in advance if anyone can straighten me out on any of this.

Here is a thread with no buzz, no start. Speculation on eight failed injectors, but it doesn't have a conclusion.

https://www.ford-trucks.com/forums/1...orgetting.html

 

For some reason I don't think this thread will ever have a definitive conclusion either.

 

A similar issue on another forum and ford_doctor suggested that a single injector coil could be causing a problem and not throwing a code. The suggested troubleshooting was to disconnect one-at-a-time and see if it would then perform the buzz test and start (ie hopefully identify one offending injector).

 

Interesting Mark, I'll have to check that thread out....curious what the results are