Diagnose injectors on a budget - Ford Powerstroke Diesel Forum
 
LinkBack Thread Tools Display Modes
post #1 of 3 Old 04-11-2012, 12:29 PM Thread Starter
Powerstroke.org Rookie
 
Join Date: Sep 2009
Posts: 15
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Diagnose injectors on a budget

I have a 2001 F350 that starts extremely rough in the morning and spits white exhaust. I have already replaced the batteries, glow plugs, gpr and the under valve cover wire harnesses which has eaten my budget for this project. I am almost considering selling the truck. When I took the truck to a mechanic I was told that there is substantial blow-by but the shop wanted $500 for a compression test. I would have done the compression test myself but I couldn't find a diesel compression gauge that I could rent.

The truck runs great once it's warmed up and my fuel economy is 14 mpg since January. When I run Diesel Kleen in the fuel the problems seem to get better. This leads me to believe that I have a sticking injector(s).

Am I on the right track? How do I diagnose injectors on a tight budget? I would like to do the labor myself to save money.

Thanks in advance for the advice.
Campbellmeister is offline  
post #2 of 3 Old 04-13-2012, 06:36 AM
Compression Ignition Addict
 
audiocontr's Avatar
 
Join Date: Jul 2010
Location: Falls Chruch
Posts: 463
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
Hook it to a scanner and get cyl contribution numbers. It wont give you an absolute, but the numbers can help indicate how bad they are getting...

Example - My stocks at 135000 miles were around the following:

1) <1%
2) <1%
3) <5%
4) <2%
5) <2%
6) <3%
7) <2%
8) <8%

After replacing the injectors with used stage 1s and new o-rings:

1) 0%
2) 0%
3) <2%
4) 0%
5) 0%
6) 0%
7) 0%
8) <4%

Nonconformist. Functionality over bling.

My three rules for 7.3l troubleshooting: 1) Replace CPS and keep a spare. 2) Replace FPR and know your fuel pressure. 3) Hook it to a scanner and check for codes.
audiocontr is offline  
post #3 of 3 Old 04-13-2012, 03:10 PM
Member
 
Myers129's Avatar
 
Join Date: Dec 2011
Location: NW Ohio
Posts: 64
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
I was told to use rev x by a couple of other members but i never tried it, i just replaced my injectors instead

2000 f550 crew cab 4x4 w/ utility bed
regulated return w/ bowl delete, 4" straight pipe, stage 1 single shots, DIY 6637, adrenaline HPOP, DP tuner F6= 80 econo, 140 aggressive, 140 extreme, towing tunes, 22.5's w/ super singles
Myers129 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