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post #1 of 10 Old 06-02-2011, 11:19 AM Thread Starter
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Fuel Pressure Question

Had my fuel pressure checked today ('05 6.0 stock), at 52 psi. I know that below 45 can be trouble, but would it be worth doing the blue spring where I am or is 52 okay? Would the 70+ psi of a new spring be noticeable, or better for the injectors?

05 F350 XLT Shortbed Crew 4WD, handshaker, stock
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post #2 of 10 Old 06-02-2011, 11:29 AM
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do the upgraded Fuel Regulator kit (Blue Spring).

Much better. My pressure was at 45 psi. After change, a whole new truck. Well worth the 30 minutes to change it.

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post #3 of 10 Old 06-02-2011, 11:31 AM
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Do the spring. That pressure is low and at WOT you could very well dip below 45psi.
The 70psi will not be a HUGE difference, if any, for "seat of the pants" dyno. The spring is cheap insurance against injector failure
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post #4 of 10 Old 06-02-2011, 11:31 AM
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Quote:
Originally Posted by PineKnot View Post
Had my fuel pressure checked today ('05 6.0 stock), at 52 psi. I know that below 45 can be trouble, but would it be worth doing the blue spring where I am or is 52 okay? Would the 70+ psi of a new spring be noticeable, or better for the injectors?
Unless the 52 was on WOT, I would upgrade it. The test most likely was at idle and at WOT it would fall below 45. The upgraded spring is a must IMO.


2005 F-250,6.0L, Torqshift, 3.73, Edge Insight CTS, ISSPRO Ev2 Fuel Pressure Gauge, Upgraded Fuel Pressure Spring, Sinister EGR Delete, Sinister Coolant Filter kit, New Oil Cooler, Cat ELC coolant, Turbo Infeed and Drain Tube, STC fitting upgrade, SCT x3 from Eric at Innovative, BFG All-Terrains, REV-X, Mobil 1 5w-40 Syn, 58v Swamps FICM, Stock Otherwise
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post #5 of 10 Old 06-02-2011, 11:38 AM
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If you want the kit that will run you 1/2 of the typical 3C3Z-9T517-AG, try ordering
part #6E7Z-9C165-B. If you get your stuff through International, their part # is 1854267C94.
That number will not include the housing that the 3C3Z-9T517-AG gets you, but does include everything you will need.
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post #6 of 10 Old 06-02-2011, 11:42 AM
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I had a minor "miss" (was not a miss, but is commonly mistaken for one) type condition that was completely resolved with the upgrade, and take off is much better. No power difference, but on/off throttle is much smoother

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post #7 of 10 Old 06-02-2011, 12:55 PM Thread Starter
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45 psi was at idle. Thanks for the info.

05 F350 XLT Shortbed Crew 4WD, handshaker, stock
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post #8 of 10 Old 06-02-2011, 01:00 PM
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Quote:
Originally Posted by PineKnot View Post
45 psi was at idle. Thanks for the info.
That was me. I would do the blue spring upgrade if I were you

ERIC - Tennessee Powerstrokes Chapter Director

2011 K1500 Silverado Z71 5.3L Vortec
2004 F250 Super Crew FX4 Powerstroke
1997 F250 Super Cab 4x4 Powerstroke
2004 K1500 Silverado Z71 5.3L Vortec
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post #9 of 10 Old 06-02-2011, 01:31 PM
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My pressure with only 17k had 44lbs WOT and 50lbs idle now 62 idle and 58 WOT
Here you go this is a good post by Band Member on the fuel pressure reg spring install over at the Dieselstop
Fuel Regulator Upgrade w/ Pictures - Diesel Forum - TheDieselStop.com
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post #10 of 10 Old 06-03-2011, 02:51 AM Thread Starter
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Thanks everyone for all the good information. The dealer quoted $238.33 for the kit and install. I ordered the kit online from Tousley Ford for about 60 bucks with shipping and will do it myself. No brainer.

05 F350 XLT Shortbed Crew 4WD, handshaker, stock
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