Fuel line diagram??? - Diesel Forum - TheDieselStop.com
7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

LinkBack Thread Tools Display Modes
post #1 of 3 (permalink) Old 04-09-2008, 12:36 PM Thread Starter
Join Date: Feb 2008
Location: S.E. Michigan
Posts: 50
My Photos: (4)
Feedback Score: 0 reviews
Angry Fuel line diagram???

Does anyone have a diagram of the fuel lines for an '87 f-350?

I replaced the injector caps, o-rings, return lines between injectors and the return line going back to the fuel tank selector switch, even the "olives" that seal the fuel header to the injector pump.

After replacing all these lines the truck starts fine after I prime the system, but if I let it sit a day or 2 it will start right up on the first revolution, run for about a minute then run out of fuel.
I then have to bleed out all the air that has entered the system from only god knows where and try not to kill my batteries or starter in the process...

This is driving me MAD!!!

Is there a check valve somewhere that might possibly be missing???

I don't want any bypass or electric fuel pump quick fixes, I just wanna get this issue resolved once and for all...


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
F-350 Wrecker 17' Aluminum rollback
7.3L Idi non-turbo (1990)
mattinthebox is offline  
Sponsored Links
post #2 of 3 (permalink) Old 04-09-2008, 06:42 PM
Senior Member
cdnsarguy's Avatar
Join Date: Jan 2003
Location: Neepawa, Manitoba Canada
Posts: 20,672
My Photos: (109)
Feedback Score: 0 reviews
Could be a return line cap is not sealed right..........

Visit........ Ford diesel 6.9 7.3 IDI read up on air in the system/filter leak points etc.

93 F250 7.3 IDI S/C XLT 4X4 E40D 3.55LS, Captains chairs, Tutone Mocha, Leer 48" Hiboy cap, FR & RR hitches, full DeeZee running boards. Factory ordered/delivered Jan 93

Toys: 2006 37' Triple E Embassy coach (powered by Cummins), 18' Sylvan Pro Fish with Mariner motors.

Proud Canadian BOOB man too!!

Please PRIVATE MESSAGE only!! ...
Please DO NOT.....visitor message me...
cdnsarguy is offline  
post #3 of 3 (permalink) Old 04-09-2008, 07:59 PM
Senior Member
Join Date: Nov 2002
Location: Minnesota
Posts: 2,457
My Photos: (0)
Feedback Score: 0 reviews
For $30, replace the fuel pump, nothing will last forever.
How old is your current fuel pump?

'93 F-250 IDI, 4x4, K&N, no soup bowl, stock, with 265,XXX miles 5 speed, 3.55, kind of new LUK clutch, runs great, starts great, it is great. The truck is getting old.
BuilderBob is offline  
Sponsored Links

  Diesel Forum - TheDieselStop.com > Ford Diesels > 7.3L IDI Diesels (Not Power Strokes)

Quick Reply

Register Now

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

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


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

Email Address:


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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
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