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Old 06-02-2011, 12:19 PM
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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?
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Old 06-02-2011, 12:29 PM
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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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Old 06-02-2011, 12:31 PM
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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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Old 06-02-2011, 12:31 PM
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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.
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Old 06-02-2011, 12:38 PM
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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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Old 06-02-2011, 12:42 PM
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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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Old 06-02-2011, 01:55 PM
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45 psi was at idle. Thanks for the info.
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Old 06-02-2011, 02:00 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
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Old 06-02-2011, 02:31 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
2 stroker
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Old 06-03-2011, 03:51 AM
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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.
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