why just 15 psi? - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 03-05-2008, 02:56 PM Thread Starter
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why just 15 psi?

Just installed the 2nd fuel pressure gauge. Thought the first one was broken. Wondering why I only get 15 psi at the shreader valve. Truck runs ok.

97 F-350, 7.3 psd, xlt, limited edition, obs, dually, E40d at, 410 r axle, reg. cab, 8ft bed, 145000 miles, DIY Tymar intake (napa filter) CCV mod. fpr bb mod, HPX crossover pipe, SS Bully steps, Reese Fifth wheel hitch, CB Radio, 3" DP /4" back w/cat delete and 4" flow-thru muffler w/5" tip.
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post #2 of 15 Old 03-05-2008, 03:01 PM
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15 psi is VERY low. Actually harmful to your injectors.

Are you sure you have the correct type of gauge?

2001 F250
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post #3 of 15 Old 03-05-2008, 03:02 PM
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Truck is running with 15psi or is that cranking pressure?

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #4 of 15 Old 03-05-2008, 03:02 PM
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HaHaHa marty we have a habbit of posting at the same time alot

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #5 of 15 Old 03-05-2008, 03:03 PM
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I agree 15 psi is way too low very harmful for injectors. I still think you have a bad FPR especialy scine the housing cracked and you jb welded it

1995 Ford F250 4X4 Sup cap Long bed off white
7.3L Powerstroke, 5 speed manual

Mods Stancor GPR, Diamond eye 3" DP, Diamond Eye 4" Exhaust, AFE Stage II Intake,3" plenum setup,Swamps IDM,Eletric Fuel System,Adrenaline HPOP,stage I sticks, ts 6 pos,
Banks 5" Tips, Leveling Kit,Dana 60 Swap, AutoMeter Boost, Pyro, Fuel Pressure
30% Windows,
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post #6 of 15 Old 03-05-2008, 03:12 PM Thread Starter
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That could be it. I took the little screen out too to clean it up and there is a little plastic ball a little bigger than a bb as I remember in there too and seems like there was a little spring too. If there is mine is missing So I have ball, screen. Should it be ball,spring,screen?

97 F-350, 7.3 psd, xlt, limited edition, obs, dually, E40d at, 410 r axle, reg. cab, 8ft bed, 145000 miles, DIY Tymar intake (napa filter) CCV mod. fpr bb mod, HPX crossover pipe, SS Bully steps, Reese Fifth wheel hitch, CB Radio, 3" DP /4" back w/cat delete and 4" flow-thru muffler w/5" tip.

Last edited by Triflex; 03-05-2008 at 03:22 PM.
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post #7 of 15 Old 03-05-2008, 03:14 PM
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Yes!

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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post #8 of 15 Old 03-05-2008, 03:18 PM Thread Starter
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Quote:
Originally Posted by vitalidle View Post
Truck is running with 15psi or is that cranking pressure?
Thats at idle after a bb mod.

97 F-350, 7.3 psd, xlt, limited edition, obs, dually, E40d at, 410 r axle, reg. cab, 8ft bed, 145000 miles, DIY Tymar intake (napa filter) CCV mod. fpr bb mod, HPX crossover pipe, SS Bully steps, Reese Fifth wheel hitch, CB Radio, 3" DP /4" back w/cat delete and 4" flow-thru muffler w/5" tip.
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post #9 of 15 Old 03-05-2008, 03:19 PM Thread Starter
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Quote:
Originally Posted by Maintain View Post
15 psi is VERY low. Actually harmful to your injectors.

Are you sure you have the correct type of gauge?
I ordered one gauge and sent it back, Ordered another from JEG`s by number and it was pictured as a fpg but it only says psi on the gauge, Goes to 100

97 F-350, 7.3 psd, xlt, limited edition, obs, dually, E40d at, 410 r axle, reg. cab, 8ft bed, 145000 miles, DIY Tymar intake (napa filter) CCV mod. fpr bb mod, HPX crossover pipe, SS Bully steps, Reese Fifth wheel hitch, CB Radio, 3" DP /4" back w/cat delete and 4" flow-thru muffler w/5" tip.
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post #10 of 15 Old 03-05-2008, 03:22 PM
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Yeah you want better then 50 psi at idle

2002 F-250 4x4 EC, SRW, SB
Auto 93,000 miles
DP Tuner F5
ATS Compressor and 1.0 Exhaust housing high flow back plate
Turbo Back 4" Silverline Exhaust Mbrp Muffler Delete
Isspro Trans,Pyro,Boost Triple Pod
Fumoto Oil Drain Valve
AIH Delete With Boost Fitting

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