Increased fuel psi? - Ford Powerstroke Diesel Forum
 
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post #1 of 7 Old 12-06-2012, 02:24 PM Thread Starter
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Increased fuel psi?

My fuel psi usually sits around 62 psi. I noticed this evening it was around 70-72 psi. On acceleration it got up to 80psi. It also started idling rough as well. Any thoughts as to whats going on?

2004 F250 CCSB FX4
ARP Head Studs, EGR deleted, Sinister bypasss, Cts by Edge, 180/75 by Warren, 62/80 II paht Shaft, Custom Built trans with TransGo Shift kit, Fass 150, S&B Intake, SCT by ID and GH, 4" MBRP turbo back......BlackOut
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post #2 of 7 Old 12-06-2012, 02:34 PM
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Never seen fuel pressure go up when accelerating, usually goes down.

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post #3 of 7 Old 12-06-2012, 02:36 PM
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injector stuck closed?


07 F250 Lariat ECSB bed FX4 6.0
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post #4 of 7 Old 12-06-2012, 04:48 PM Thread Starter
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Not sure how could I tell? I'm running a Cts monitor. My injectors had been fully reworked less then two months ago.

2004 F250 CCSB FX4
ARP Head Studs, EGR deleted, Sinister bypasss, Cts by Edge, 180/75 by Warren, 62/80 II paht Shaft, Custom Built trans with TransGo Shift kit, Fass 150, S&B Intake, SCT by ID and GH, 4" MBRP turbo back......BlackOut
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post #5 of 7 Old 12-06-2012, 06:00 PM
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Fuel pressure sensor could be going bad too. That's what happened with my edge fuel sensor. Look at what the pressure reads with truck off, key on. Should be zero, if it's reading anything higher, sensor is bad. Mine was reading 40 with truck off, key on and at 100 when driving.
I had same symptoms as you. Pressure on day just started rising higher and higher till it maxed out at 100. Haven't had a chance to replace it yet though


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post #6 of 7 Old 12-22-2012, 05:34 PM
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I thought with the key on engine off the fuel psi should pressure up to 60psi or whatever..? I dont know but how would the trk start with no fuel psi?

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post #7 of 7 Old 12-22-2012, 06:17 PM
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The pump will turn off after 20-30 seconds of KOEOff. The pressure will bleed off fairly quick.

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Stiction Problems - Fix it yourself! - http://www.powerstroke.org/forum/gen...ml#post4509754
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