Perfect fuel pressure at Idle, no pressure driving. I'm Stumped! - Ford Powerstroke Diesel Forum
User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 4 Old 02-06-2012, 07:54 AM Thread Starter
Member
 
Join Date: Dec 2010
Location: Gillsville, Ga
Posts: 64
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Perfect fuel pressure at Idle, no pressure driving. I'm Stumped!

My truck is a 95, I've read and read and read everything I can and I'm fairly decent workin on powerstrokes. However this is my first obs. i can get it to prime up and idle perfect, I let it all from 11pm Saturday night till 1030am Sunday and never missed a lick but as soon as you drive it, it loses pressure. 50+psi idle 0 after driving it 5 minues. I have put 2 new fuel pumps on it, new cps, new ipr, new orfice vent kit, new fuel filter, all new hoses and I've pulled the fuel bowl and cleaned all the ports. I have good oil pressure according to the dash and the hpop doesn't loose prime. The fuel filter light comes on and flashes sometimes. I am completly stumped. Any help would be awesome.


Sent from my Ally using Tapatalk
tbarbee is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 02-19-2012, 12:11 PM
Premium Member

 
mike3026's Avatar
 
Join Date: Feb 2011
Location: Bay Area
Posts: 36
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Quote:
Originally Posted by tbarbee View Post
My truck is a 95, I've read and read and read everything I can and I'm fairly decent workin on powerstrokes. However this is my first obs. i can get it to prime up and idle perfect, I let it all from 11pm Saturday night till 1030am Sunday and never missed a lick but as soon as you drive it, it loses pressure. 50+psi idle 0 after driving it 5 minues. I have put 2 new fuel pumps on it, new cps, new ipr, new orfice vent kit, new fuel filter, all new hoses and I've pulled the fuel bowl and cleaned all the ports. I have good oil pressure according to the dash and the hpop doesn't loose prime. The fuel filter light comes on and flashes sometimes. I am completly stumped. Any help would be awesome.


Sent from my Ally using Tapatalk
Maybe it is the pickup tube screens in the tanks? Or the injectors are getting tired? I've read that those screens can get pretty bad, especially after using bio for the first time.

What is a "orfice vent kit"...
mike3026 is offline  
post #3 of 4 Old 02-19-2012, 01:51 PM Thread Starter
Member
 
Join Date: Dec 2010
Location: Gillsville, Ga
Posts: 64
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 dropped the tank and the screen on the pick up tube was busted to pieces and floating around the bottom of the tank. I changed one out off a parts truck, didn't make a difference. I did hook an electric pump I have off a SD parts truck I have and it seemed to struggle pulling fuel from the tank selector back. And seemed to be pulling air aswell. Last night I ran a straight piece of fuel hose from the front tank pick up to the steel line bypassing the selector and all. As soon as the rain goes away ill go try to run it and see if it fixed my problem.

The orfice vent kit is the little screen and 3 orings on the side of the fuel bowl after the fuel pressure regulator.

Sent from my Ally using Tapatalk
tbarbee is offline  
post #4 of 4 Old 02-20-2012, 09:24 AM
Compression Ignition Addict
 
Patrick Feeley's Avatar
 
Join Date: Oct 2011
Location: Tehachapi, CA
Posts: 2,173
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Thanks: 0
Thanked 77 Times in 75 Posts
Feedback Score: 0 reviews
Does your fuel bowl setup have the "smaller bowl" under the fuel pressure regulator (if its a 95 it should)? If it does, there is a sock-type screen in there that you can clean. If it has the hard line into the bottom of the regulator (usually later ones), there is a mesh screen under the plate held in by a circlip that can plug. Cheers!

1997 F250 SC 4x4, E4OD, 4.10 LS, Basically Stock, Relocated Block Heater Plug, External Trans Filter, Tru-Cool Max, I/C Mounted but not Plumbed

SOLD - 1994 F350 CC DRW 2WD PSD, 5 Speed, 4.10 LS, SBC Con-O, Baldwin Filter, Tymar HPX Hose, DPPI DP, Bilsteins, $12 AIC, Coolant Filter, Explorer Overhead Console, A-Pillar w/ISSPRO Black Ice, EV Boost, and EV Pyro, Modified Pedestal, Gutted EBPV.
Patrick Feeley is offline  
Sponsored Links
Advertisement
 
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