fuel pressure dropping - Ford Powerstroke Diesel Forum

6.0L Performance Parts Discussion What has or has not worked for you?

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post #1 of 12 Old 12-08-2010, 08:08 PM Thread Starter
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fuel pressure dropping

I got a 2003 6.0 here a about a month ago and it was already studded. I put a sct and got matts tunes and the srl++. I finally got my gauges installed and I am seeing my fuel pressure is about 51 at idle and then I think I saw it get to 42 at WOT. The fuel filters were just changed also. So i'm thinking an air dog II is in y near future. Im planning on running 190's and I don't know what turbo I want yet.

2003 F-250 6.0 FX4 lariat, sct with srl++,swamps ficm, Air dog II 165,ARP headstuds,4" straight pipe, airaid intake,4 gauge A piller with prosport gauges,boost,egts,tranny, fuel pressure, 4200 pioneer double din, 4 kicker L7's 12's behind the rear seat, kicker zx2500.1,Fuel hostage all black 22x11's with toyo mt's 37x13.5, 5% tint all the way around
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post #2 of 12 Old 12-08-2010, 08:42 PM
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first things first, i'd get the Ford updated fuel pressure regulator spring kit, your spring is worn out it seems, thats why you're seeing a rapid drop in pressure. Do this before your current injectors hate you and kick the bucket. with 190's an airdog is a must with crossover lines. Lots of people are having great luck with the powermax turbos, especially with 190's
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post #3 of 12 Old 12-09-2010, 03:06 PM
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If you are planning on getting 190s just go ahead and get the Airdog II
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post #4 of 12 Old 12-18-2010, 02:56 PM Thread Starter
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I put the regulator kit on and it now is around 66 and idle and cruising but i can still get it to drop to the low 40's i think i even saw around 38 at around 90 mph then once it shifted to over drive it shot back up

2003 F-250 6.0 FX4 lariat, sct with srl++,swamps ficm, Air dog II 165,ARP headstuds,4" straight pipe, airaid intake,4 gauge A piller with prosport gauges,boost,egts,tranny, fuel pressure, 4200 pioneer double din, 4 kicker L7's 12's behind the rear seat, kicker zx2500.1,Fuel hostage all black 22x11's with toyo mt's 37x13.5, 5% tint all the way around
Sold:early 1999 F-250 lariat with most of the fun stuff
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post #5 of 12 Old 12-18-2010, 07:37 PM
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how many miles are on your truck?

2007 F250 CC Lariat
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post #6 of 12 Old 12-18-2010, 07:41 PM
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sorry to be off subject. But how does the slr++ run



2013 6.7 with stuff
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post #7 of 12 Old 12-18-2010, 08:28 PM
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You could also try installing the 6.4 banjos.

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post #8 of 12 Old 12-19-2010, 05:43 PM Thread Starter
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Its got 90,000 now. And the srl++ is nice no complaints and its very clean. Ill end up trying the banjos this week but i have a funny feeling its not going to help get out of the 40's

2003 F-250 6.0 FX4 lariat, sct with srl++,swamps ficm, Air dog II 165,ARP headstuds,4" straight pipe, airaid intake,4 gauge A piller with prosport gauges,boost,egts,tranny, fuel pressure, 4200 pioneer double din, 4 kicker L7's 12's behind the rear seat, kicker zx2500.1,Fuel hostage all black 22x11's with toyo mt's 37x13.5, 5% tint all the way around
Sold:early 1999 F-250 lariat with most of the fun stuff
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post #9 of 12 Old 12-22-2010, 08:56 AM
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Quote:
Originally Posted by AKHILF574 View Post
Ill end up trying the banjos this week but i have a funny feeling its not going to help get out of the 40's
The banjo bolt upgrade will not make a difference in the fuel pressure you are seeing at the gauge... but it will let more fuel get through to the injectors.

2006 F-450 XLT 4x4 Auto 4.30L Alcoa 19.5" 16,000 GVWR
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P-Max w/WPE billet wheel, Spearco IC, 4" Banks Exhaust, Shell T6, Zerex EC-1, Oil bypass filter

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Last edited by Arctic Fox; 12-22-2010 at 09:10 AM.
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post #10 of 12 Old 12-22-2010, 09:39 AM
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sounds like my prob i had on my 07 not sure if 03 is the same but i had to install a raptor pump after my airdog2 just to hold 62psi but i was runing 225s at the time if i were u id try the airdog. since u gotta get it anyway u might aswell upgrade now....
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