Fuel pressure test port location - Ford Powerstroke Diesel Forum
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post #1 of 9 Old 01-21-2008, 08:54 AM Thread Starter
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Fuel pressure test port location

Could someone tell me where the fuel pressure test port is. I believe it is on the passenger side but I must be over looking it. A picture would help alot if anyone has one. Also what should I be looking for at idle and WOT. Thanks

early 99 F250 4" MBRP, DIY intake, TW Chip, Built tranny from Fleece Performance Diesel, HPX line
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post #2 of 9 Old 01-21-2008, 10:47 AM
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It is on the driverside slightly off center and it has a hole for an allan wrench. It is a #4 ORB. Factory specs are 51psi +/-4psi all the time.

Anything below 40psi and you are loosing performance.

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
Bored with current setup

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post #3 of 9 Old 01-21-2008, 12:09 PM
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Stokinearly is this where you would mount a pressure gauge? Also do you know what and how many fittings that I would need to get it spaced up and ot of the way. Im looking at a gauge with a 1/4" npt connection.




Early 99 F250 SD CrewCab LongBox
Tony Wildman 6 Position
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Autometer Boost, EGT, Trans Gauges
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ITP Overboost Annihilator
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post #4 of 9 Old 01-21-2008, 12:14 PM
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IIRC their is a link under the 7.3 tech files. Look under mod help.

RICK


97 F350 CREW CAB 4x4, 7.3 TURBO DIESEL, DIY INTAKE , TW TUNES
GRAND ROCK POWERFLOW STACK KIT W/5" MITRES
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post #5 of 9 Old 01-21-2008, 12:21 PM
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You will need a 90 degree 1/4" o-ring fitting with a 1/8" pipe thread on the side that goes up for the fuel sender. At least thats what I used. Hope it helps. And they are located in the back of the fuel filter housing.

Eric



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post #6 of 9 Old 01-21-2008, 12:26 PM
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Yes, this is where you can put on a gauge or sending unit. You just need to get the gauge far enough away from the bowl to fit the gauge in there. Maybe a long L #4 JIC.

Look here for fitting ideas:

SAE 37° Flare (JIC) Hydraulic Tube Fittings

Straight Thread O-Ring Hydraulic Fittings



I do not like the idea of drilling a hole in the fuel filter cap or clamping a hose on the drain valve. I have done them both and the hose on the drain valve kept popping off and flooding the valley with fuel. And the cap gauge vibrated loose when I drove it.

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
Bored with current setup

Sled Pull and Drag Racing Videos

<><
Family of 5 saved by Grace.....

Sponsored by Left Coast Diesel in Concord, Ca

Anything BUT Conservative Performance
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post #7 of 9 Old 01-21-2008, 12:33 PM
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So is the plug that is in the fuel unit a 1/4 npt?




Early 99 F250 SD CrewCab LongBox
Tony Wildman 6 Position
Ford AIS Extreme Air Intake
Magnaflow 4" Stainless Steel DP
Autometer Boost, EGT, Trans Gauges
Zoodad Mod(yes you need it on early 99 if you have AIS)
Grand Rocks Dual 5" Miter Cut Stacks
ITP Overboost Annihilator
FPR Shim
Antenna delete




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post #8 of 9 Old 01-21-2008, 12:36 PM
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It is a #4 ORB(O ring boss), it is also called a 1/4" ORB. Depends on who you talk to and what shop you go into. Parker employees live buy numbers and acronyms.

Early 99 (Born on 11-20-98) F350 CC LWB 4X4
north of 480hp and south of 13.7sec
Bored with current setup

Sled Pull and Drag Racing Videos

<><
Family of 5 saved by Grace.....

Sponsored by Left Coast Diesel in Concord, Ca

Anything BUT Conservative Performance
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post #9 of 9 Old 01-21-2008, 12:50 PM
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Early 99 F250 SD CrewCab LongBox
Tony Wildman 6 Position
Ford AIS Extreme Air Intake
Magnaflow 4" Stainless Steel DP
Autometer Boost, EGT, Trans Gauges
Zoodad Mod(yes you need it on early 99 if you have AIS)
Grand Rocks Dual 5" Miter Cut Stacks
ITP Overboost Annihilator
FPR Shim
Antenna delete




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