Fuel pressure test - Ford Powerstroke Diesel Forum
Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-14-2009, 10:18 PM
Powerstroke.org Rookie
 

Join Date: Jun 2007
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Fuel pressure test

been having some runnablity problems and want to test my fuel pressure at the end of the fuel rail. I found an article a while back that provided all the fitting types needed but now I can't find it.

Anybody know if I went to a hydrolic shop what I would need to ask for to screw into the head?

thanks.

early 99 7.3 PSD
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-15-2009, 08:01 PM
Powerstroke.org Rookie
 

Join Date: Jun 2007
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
I removed the square headed plug and took it down to the shop and got a guage hooked up.

Question: I get 65psi before starting and stays there when running. I haven't been able to put a load on it with the guage since my valve covers are off and the boost tubes disconnects. Should the pressure fall down quick once the truck is turned off? isn't there a check valve at the input side of the fuel rail that should prevent this? Wondering if i have an injector that is not closing and leaking fuel.

This would explain my poor milage. I have only been getting about 10mpg, with reman injectors and adrenaline hpop pump and custom and stock tuning.
Reply With Quote Quick reply to this message
  #3  
Old 07-17-2009, 10:41 AM
Member
 

Join Date: Jul 2008
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Reply With Quote Quick reply to this message
  #4  
Old 07-20-2009, 07:28 AM
Compression Ignition Addict
 

Join Date: Aug 2008
Location: Bordentown NJ
Posts: 489
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Here is a bump for ya my buddy is having the same problem I would like to figure it out also before I go and pull the injectors out of it.
Reply With Quote Quick reply to this message
  #5  
Old 07-20-2009, 07:02 PM
Powerstroke.org Rookie
 

Join Date: Jun 2007
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Well I found out that its normal for the fuel pressure to drop once the key is turned off. So I am in search for a compression tester.

Another thing I was told is that some early 99 powerstrokes computers didn't take to chips well and some have bought a newwer style computer and had better driveability. So I am going to try to find more about this.
Reply With Quote Quick reply to this message
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:

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
Display Modes

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



All times are GMT -8. The time now is 12:48 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors