Crancks, No Smoke, No Start

[Dead450]

This is my first diesel and my first mistake was going to long before changing oil. Last time I got the truck to start it took all efforts to crank and had very little power. I began by changing the oil, oil filter and fuel filter. Cranked at that time but did not start. Next step was the CPS stills no luck. Throughout the process I killed the batteries and replaced both. I now keep them charged while working on it. The HPOP has fluid and there is pressure in the fuel bowl. My next step was the replacing the glow plug relay. Still no luck and managed to kill the starter. Replaced the starter. The wait to start light comes on and operates normally. The check engine light operates normally. After a few seconds of cranking the oil pressure gauges jumps up.

I had a “mobile diesel mechanic” come by the house covered the same topics and I was told the computer was bad. Stated the computer was not “pulsing” the injectors. I sent the computer off for a rebuild and flashing. The re-builders said it had no issues but still flashed it. I put the computer back in yet still no luck.

Can anyone tell me what I have missed?
2000 F450 super duty
7.3 Powerstroke

[jc82chevyman]

It could be your ipr, idm, icp, those are all possibilities try unpluging your icp its on the drivers side head has three wires going to it that will go to default mode

[Dead450]

Thank yo for the reply, already tried unplugging the ICP, the IDM has been checked and flashed, I will check into the Injection Pressure Regulator (IPR) is there a method of testing the IPR? Thanks.

[Dirk611]

Have you checked the voltage? Try putting a boost charger on it and try to start. 7.3 likes lots of voltage.

[Dead450]

Yea...it has fresh batteries and I keep the chargre on it durring all ressurection attempts. Charger has a boost start.