No start.

Hi there all. No start after replacing dummy plug and standpipe on driver's side. I used the starter wire to build oil pressure but no luck. Koeo dash oil gauge is at the bottom, but while cranking it goes up and goes down after 3-4 sec later when i let the ignition go. Ficm sync is 0 koeo. The truck had hot no start problems before i started to replace the dummy plug and standpipe on ds. But it used to start when cold with a little hard start problem within 3 sec.Any suggestions?
2005 F250 6.0 137000 miles
Thanks.

2005 F250 Powerstroke 6.0 DieseL

Sounds like something is unplugged.
Otoh, 0 ficm sync is a issue as well.

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Yes i am trying to figure it out.

2005 F250 Powerstroke 6.0 DieseL