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Location: Sassamansville, Pa
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Anything under 45 psi fuel pressure can cause damage to the injectors.
Either you can or have your mechanic check the FICM.Fuel Press
You may be experiencing stiction, or have injector issues. You won't know unless you put in on a good diagnostic scan tool. If your due for a oil change anyway, switch out to a lighter oil and try some rev-x.
Without a good diagnostic scan tool, you might be throwing parts at it and hope to get lucky.
Did your mechanic physically remove the EGR valve to check for deposits? How about the turbo, did he disassemble the turbo to check unison ring and vanes?
2004 F350 CC DRW King Ranch
X-3 tunes by DJ'S,QT,GH,ID. Gryphon FICM tunes, ARP studs,Stage 1turbo,ATS coolant recirc lines,Swamp's 48v ficm,coolant filter,AD2,Snow Perf stage II,EGR delete,4" turbo back straight pipe,S&Bintake,Quad "A" pillar autometer gauges,Suncoast Tri Disk Conv.,Billet input shaft,Suncoast superduty rebuild kit,Trans-go shift kit,Mag-Hytec trans pan,CFM+ elbow,ccv mod,15K reese 5er,17" LCD TV/DVD,Cobra 29 Nitewatch CB