ok got an 04 6.0 f250 fx4 wont rev over 2000 rpm
 

Two days ago driving home pulling a small welding tailor.drug it for about 15 miles fine then it started feeling like it was pulling harder and harder then something happened that shut all power off pulled over and went to checking stuff found fuel filter stopped up and loose positive wire on terminal changed both filters dropped fuel tank cleaned it and pickup screen I'm getting pressure to secondary filter but It's hard to crank and seems to have plenty of power till you hit 2000 rpms then bogs down and when idling oil pres drops to nothing till you tap accelerator then it shoots back up anf:argh:d stays then it might drop again any advice please

more info...how does she start? will it start okay after warmed up? any mods to the truck? hit the sticky at the top of the section.

No hard to start and its got a bully dog triple pup and egr del

Put it back to stock and try again. Sounds like a combination of no fuel pressure/low fuel pressure and bad oil pressure. They wont run without oil pressure since the injectors are fired off of high pressure oil.

When's the last time the oil and oil filter were changed and what oil filter used? What fuel filters did you use?

Did oil change two thousand ago master craft filters and rotello 15-40 think I may have found problem vgt not moving veins in turbo had some boost at takeoff manuall set fins at mid I got most my rpms back but lost take off and I'm still having problem with start up something bleading off the longer it sits off the harder it is to start

I would check the fuel pressure on it. You can put a mechanical gauge on one of the ports on the fuel filter housing on top of the motor, do it so it's reading the pressure after the filter, then run it up under the hood and hold it down under one of the wipers, so you can see it while you're driving. Check the pressure, it should be 55ish. Below 45 they say is damaging injectors.

Motorcraft filters you mean?

Your turbo is probably only part of your issues. Sounds like that could use a good cleaning. DTS Articles - Turbocharger Reconditioning

Thanks after driving it today I think its it might be a fuel problem as well I ordered a fuel pump for it and will let you know what psi was this truck is a money pit but it also beats up and down a fence line in west Texas rode hard and put up wet every day

Ok fuel pressure is 66-69psi still hard to start and no power if you ease into it seems fine you can get it up to 60mph if at any time you get on to it it falls flat on its face I'm tearing into it today hope i figure it out

Have you tried scanning it for any codes? Could be quite a few things. Do you have access to a real scanner to watch everything going on while it's running?

66-69psi is high. Does this have the updated fuel spring already?

maybe the IPR should be checked, to see if any metal shavings are on the screen...hpop