04 F350 turns over but not start

[newbie04]

Hello all I am new to the Powerstroke nation. I have been here for some time reading the threads but now am in need of HELP!!!!!!!!! lol....I have had my 04 (later year) for about 1 1/2 years. Ran great never a problem, my first diesel. about 2 months ago it started bucking and jerking when I let off the accerleration with black smoke, outside of that still ran and started fine, push back on it no problem. Got up 2 weeks ago turns over no start. Towed it to Ford Dealership and below is a description of what I got.

Codes P0262, P0271, P0277, P0280 and P0603. Fuel pressure volume tested good, relative compression test showed random cylinder weak. Injector test showed Cylinders 1,4,6,7 Electrically defective.

Checked FICM wiring and after wiggling harness codes would dissapear. accessed FICM found wires had been spliced on Main engine wiring harness. Repaired engine wiring harness under FICM and replaced FICM harness. Re-tested and no codes set when cranking but no start. relative compression test showed cylinders, 2, 4, 6, 8 weak.
Removed left side glow plugs and performed manual compression test. Found Cylinders 6 and 8 very low.
All PIDS that are required for engine to start are normal. Could have faulty injectors along with base engine concerns causing low compression. "Nothing else follows"////////// $1350.00 for what was done and the truck still does not run...FYI they did say by spaying Starter fluid in it, it did run for about 30 seconds and quit.
The mechanics recommendation is a New Long Block to the tune of $14,000.00. I am having it towed back to the house today. I am mechanically inclined and willing to tackle this issue a step at a time.
Any and all input is definitely appreciated. Does anyone think with the information above that I am in need of a new motor. ooouuucchhhhhh
Newbie04

[southend]

Pull your secondary fuel filter, ficm relay, and hfcm fuse. Have someone crank it over and look for bubbles/combustion gas in the housing. Could be leaking copper injector washers allowing combustion gasses in the fuel system. Get a monitor on that truck!

Sent from my phone that somebody didn't help me get.

[mhatlen]

I would also take a look at the valve train,you may have broken rocker arms or bent push rods. If they are intact and opening and closing during crank you will have to go deeper: head gasket or valves or piston problems.
How low is your pressure?

[newbie04]

Thanks for the reply. As far as the pressure, I did not get a reading given to me with the paperwork I received. The mechanic that did the work was not available at the time. I requested all repaired parts and mechanical print outs as well. I wanted to know exactly what they did and did not do, which at this point seems not to much. I somehow got the impression that maybe they got lost, didn't want to keep tooling with it and the best way to either fix the issue was to tell me I needed a new motor, maybe I am wrong but that just how I feel..

[newbie04]

Roger southend, thanks. I will give this a shot when I am off from work later this week. I did check the FICM voltage, however it was at 47.8 -47.9, isnt it supposed to register 48+ volts, this was with the switch to ON, not cranking it. Are the FICM relay and the HFCM fuses ones that can be physically looked at to determine defectiveness or do you have to use a meter to determine "continuity" on it.....Sorry for all the questions, however as the name says "Newbie04"

[mhatlen]

If you are going to try to diagnose this yourself you will need to pick yourself up a ScanguageII, they are $160.00 at Auto Zone and it will read everything your pcm sees.
Without it you are only guessing and that is all we can do.
As far as ficm voltage 46.5 up will be fine, should take those readings cranking/idle/1500/2500 ect to make sure it is stable at all different conditions.

[dannyboy950]

Just for reference the fuzez and relays can be bought at just about any electrical supply. I have even got them at Walmart and haborfreight. I keep several on hand just for testing purposes. Easier to just swap out a known good one to test with.

[southend]

This is a must.......Write Up: Monitoring the 6.0L PSD.

Sent from my phone that somebody didn't help me get.

[newbie04]

Originally Posted by mhatlen

If you are going to try to diagnose this yourself you will need to pick yourself up a ScanguageII, they are $160.00 at Auto Zone and it will read everything your pcm sees.
Without it you are only guessing and that is all we can do.
As far as ficm voltage 46.5 up will be fine, should take those readings cranking/idle/1500/2500 ect to make sure it is stable at all different conditions.

mhatlen, Roger tracking. I will pick up one this weekend. right now I sense my batteries going low, just bought two brand new replacements (batteries) from Adavanced auto 2 months ago, as we know without it running and constant cranking there are getting low..Will charge them, "slow trickle" for the next two days and go back at it. I really appreciate all the input, somehow I feel with all the information given here in the forum I WILL get 'er going.

[newbie04]

Originally Posted by dannyboy950

Just for reference the fuzez and relays can be bought at just about any electrical supply. I have even got them at Walmart and haborfreight. I keep several on hand just for testing purposes. Easier to just swap out a known good one to test with.

Good reference danny. it is nice to know I have a Harbor Freight within 5 miles of my location...I will replace these for just cause...

Will keep you all posted.

newbie04