Fuel pressure drop - Ford Powerstroke Diesel Forum
User Tag List

Reply
 
LinkBack Thread Tools Display Modes
post #1 of 22 Old 11-07-2007, 01:06 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Fuel pressure drop

I am running 58 psi at idle. When I stand on it the pressure drops to 53 psi is this ok or am I starving some injectors? Does anyone have pics on doing the BB in the fpr mod also pics of the fpr screen on cleaning it. I have read directions but pics would help tremendously. What is the difference in doing the shim or the BB?

Mike


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
post #2 of 22 Old 11-07-2007, 01:28 PM
The Lady Mod


 
Granny's Avatar
 
Join Date: Feb 2007
Location: Arkansas
Posts: 8,527
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to Granny
You can expect some drop. That does not sound like a terrible drop in pressure to me. Now if you were dropping down to like 20 psi like I was doing for a while, before I put the ITP regulated return on, then yes I would say you were starving the injectors. I as sure there will be others along to give your their opinions as well.

Granny aka Terri
granny@powerstroke.org

04 F250 CC 6.0L PSD 2WD
A Few Ponies Under The Hood
Wrenches Turned by Trucks Unlimited (Thanks Scott!) and NPCCPARTSMAN
Injectors by Ryan Casserly of Full Force Diesel

Turbo by KC
Oil Cooler by BulletProof Diesel
SCT Custom Tuning

Granny is offline  
post #3 of 22 Old 11-07-2007, 01:32 PM
Desert Shield/Storm Vet

 
vitalidle's Avatar
 
Join Date: Dec 2006
Location: Munising, MI.
Posts: 9,092
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Yeah as long as your over 50 psi your cool

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

vitalidle is offline  
post #4 of 22 Old 11-07-2007, 01:33 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well I appreciate it. I am trying to figure out why I am only getting 18 psi of boost all the sudden when I used to get around 25 with my SCT on max power. I have checked all exhaust and intercooler tube connections and cant find any leaks so I though fuel pressure might be lagging a little.


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
post #5 of 22 Old 11-07-2007, 01:37 PM
Desert Shield/Storm Vet

 
vitalidle's Avatar
 
Join Date: Dec 2006
Location: Munising, MI.
Posts: 9,092
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
Check the plastic line to the boost gauge for any kinks.

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

vitalidle is offline  
post #6 of 22 Old 11-07-2007, 03:22 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
My quadzilla commander reads off the map sensor


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
post #7 of 22 Old 11-07-2007, 03:23 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I dont have the map fooler on right now.


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
post #8 of 22 Old 11-07-2007, 03:25 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I disconnected red wastegate hose and it gets up to 19 but it seems like it starts missing at idle is that possible for the red line to cause that.


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
post #9 of 22 Old 11-07-2007, 03:38 PM
Powerstroke Techie


 
alabamafrog's Avatar
 
Join Date: Jun 2007
Location: Huntsville/Arab alabama
Posts: 3,578
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
That’s not a bad drop in pressure at all. Mine was dropping from about 50 psi to close to zero, that’s what made me find out I got a bad load of fuel and stopped up my whole system with trash. I did the fuel tank and pre pump filter mods and put a California spring in the FPR and now she hold around 80 psi and only drops about 10 psi at full throttle. Unplugging the waste gate hose from the actuator and sticking it on an inner cooler boot bolt should not affect idle in anyway. By the way, I still could get near 28 psi boost with the crapped up fuel system. Now runs about 30-32 after I built the engine and installed the new injectors.

***My Powerstroke Pics***
“Government, even in its best state, is but a necessary evil; in its worst state, an intolerable one” (T Paine)
Government cannot give anyone anything without stealing it from someone else. (A Frog)

alabamafrog is offline  
post #10 of 22 Old 11-07-2007, 03:52 PM Thread Starter
Navy Beer Guzzler

 
Mikesf250's Avatar
 
Join Date: Jan 2007
Location: Leander, Texas
Posts: 264
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I have thrown so much money at this truck and it keeps running like crap. I have new cps new icp new ipr. The truck still idles rough had intermittant loss of power. I think the engine is sound but I am having some kind of intermittant problem. Sometimes it runs like a scalded ape then sometimes it just flat fall on its face. I am not a mechanic but I also cant find a good one here. They all throw parts at the problem and dont fix anything who has got the closest good mechanic to Austin Tx. Please Help. Before I set this thing on fire.


Dodge is for people to lazy put a Cummins in a real truck

2001 F250 7.3L 4x4 = 4" Lift/ 35"Pro Comp Tires/ 16x10 Pro Comp Wheels/ Air Raid Intake/ Turbo back 4" dual stainless exhaust/ Map Fooler/ ZOODAD Mod/ SCT Xcal2/ Quadzilla Commander.
Mikesf250 is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome