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post #1 of 15 Old 02-18-2010, 08:49 AM Thread Starter
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fuel pressure?

So I got my fuel pressure gauge and installed it but did not have the sensor hooked up for a while, so the gauge would peg out while driving. I just got the billet cap in the mail and installed it.

My problem is that the gauge only register's 50psi, Is this normal? When I really hammer it down it drops like 2psi.

Did I ruin the gauge by having it pegged out for a while? Or is my fuel pump going out?

Truck runs good and no chip on motor.

any help would be great

04' F-250 6.0L

AFE Stage 2 intake
Liberator EGR delete kit
MBRP up pipe assembly
4" MBRP Turbo back (straight piped) WHISTLE
zoodad mod
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Edge Insight CS
DieselSite Coolant Filtration
Upgraded fuel pressure spring kit
upgraded turbo oil supply tube(solid)
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post #2 of 15 Old 02-18-2010, 08:57 AM
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I dont know but heres a bump for ya id like to know what pressure they should run aswell

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post #3 of 15 Old 02-18-2010, 09:21 AM
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I think they should run 55ish psi. You may have thrown the gauge out of calibration by having it pegged, I had that happen when my EGT gauge went into the negatives due to a wiring problem.

You wont know until you try another gauge on it.


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post #4 of 15 Old 02-18-2010, 09:33 AM Thread Starter
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thats kinda funny because I somehow got two gauges shipped in the mail to me. I was planning on selling one but maybe I will try the one that has not been hooked up yet to see if there is a difference. If there is I guess I won't be selling the gauge.

04' F-250 6.0L

AFE Stage 2 intake
Liberator EGR delete kit
MBRP up pipe assembly
4" MBRP Turbo back (straight piped) WHISTLE
zoodad mod
Nitto Dura Grapplers
Edge Insight CS
DieselSite Coolant Filtration
Upgraded fuel pressure spring kit
upgraded turbo oil supply tube(solid)
upgraded turbo drain tube
SWAMP's 48V FICM
Rotella ELC
Firestone Ride Rite air bags in rear
draw-tite 30k hide-a-goose kit
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post #5 of 15 Old 02-18-2010, 09:34 AM
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I would check it out for sure, then just send the other one back.


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post #6 of 15 Old 02-18-2010, 11:25 AM Thread Starter
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i'll give it a try tonight

04' F-250 6.0L

AFE Stage 2 intake
Liberator EGR delete kit
MBRP up pipe assembly
4" MBRP Turbo back (straight piped) WHISTLE
zoodad mod
Nitto Dura Grapplers
Edge Insight CS
DieselSite Coolant Filtration
Upgraded fuel pressure spring kit
upgraded turbo oil supply tube(solid)
upgraded turbo drain tube
SWAMP's 48V FICM
Rotella ELC
Firestone Ride Rite air bags in rear
draw-tite 30k hide-a-goose kit
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post #7 of 15 Old 02-18-2010, 07:07 PM
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Mine freaks out when there is air
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post #8 of 15 Old 02-18-2010, 09:14 PM
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How hard is it to install a fuel pressure gauge? What is good and bad as far as pressure readings go?

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post #9 of 15 Old 02-18-2010, 10:51 PM
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Quote:
Originally Posted by hypersnyper694788 View Post
How hard is it to install a fuel pressure gauge? What is good and bad as far as pressure readings go?
It's not hard, just tie into the test port on the filter/regulator housing under the hood.

Per FORD, you should have a minimum of 45psi at WOT UNDER LOAD on a stock tuned truck. Most guys see around mid 50's at idle. If you are dropping significant pressure under load you have a problem, plugged filters, weak pump, etc...

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Quote:
Originally Posted by wigsplitter View Post
But my wife says if it keeps me out of the strip joint go for it.........
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post #10 of 15 Old 02-19-2010, 03:17 AM Thread Starter
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tried the different gauge last night, same 50psi.

Under hard load I only see a 2psi drop so around 48psi. Is there something wrong? Or is this a normal operation?

Anyone else out there seeing this number on a none chipped truck?

P.S. - I still have the Autometer Z-series fuel pressure gauge (0-100psi) sitting in the box, brand new only hooked up once last night to check the other gauge. Anyone wanna buy?

04' F-250 6.0L

AFE Stage 2 intake
Liberator EGR delete kit
MBRP up pipe assembly
4" MBRP Turbo back (straight piped) WHISTLE
zoodad mod
Nitto Dura Grapplers
Edge Insight CS
DieselSite Coolant Filtration
Upgraded fuel pressure spring kit
upgraded turbo oil supply tube(solid)
upgraded turbo drain tube
SWAMP's 48V FICM
Rotella ELC
Firestone Ride Rite air bags in rear
draw-tite 30k hide-a-goose kit
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