Hey my powerstroke starts and sometimes when cold runs for a few minutes and then misfires and then dies changed the oil filter and fuel filters and fuel pump and the icp sensor and the ficm has 48 volts so I don't think it's that. I just bought it recently and he said he had just recently put new injectors in it and a new high pressure oil pump. Don't know what to anymore. Looking for some help

 

Nice explanation.
This is what I would check you have had a fair bit of work done to the oil system there is a small little screen on the IPR that if the person working on doesn't keep everything really clean it can get pluged. It's smaller then quarter so it wouldn't take much but it can cause some problems .