I have a 2004 Ford F250 SD PSD 6.0 on NYE driving home from work i noticed pulling up in the driveway an very minor erratic idle. Reminded me to change fuel filter. The next Evening came out to start the truck and wouldn't start so i figured id change the fuel filters. Changed them and it fired right up immediately. let it idle for 10-15min
Took it for a test drive down the street and it died a 100yrds or so it felt like it was trying but wouldn't start thought maybe air in the system but had fuel in the secondary. Finally got it started and drove it home. after than it ran for another 20min fine.
I did notice over the last few weeks that the idiot OP gauge was taking longer than usual to come up to pressure. and that it will start sometimes after about 30seconds of cranking the op gauge comes up and it starts and runs. once started it stumbles occasionallyif the rpms are up it will recover but idle it dies.
I got out the auto engenuity and tested the Injection pressure, Ficm Volt, and Fuel pump%.
At cranking the HPOP reads mid to high threes when it wont start and it tries when pressure jumps to 400 or above. When it does start it jumps to 12-1400 and drops down to about 6-700.
The IPR Reads 13.5 key on and 70-85% running.
Ficm is 48 running and occasionally drops to 46.5-47
Fuel pump% is at 99.8% always when running.
I did noticed that the fuel pump seams to be running for a long time on prime. and flutters when priming ive never noticed that sound before.
Sorry for the long post but i wanted to be thorough.
I dont know where to start looking any suggestions would be appreciated.
i ordered the socket for the ipr today and will have it tomorrow to check the screen.