94 IDI 7.3l non-turbo - Ford Powerstroke Diesel Forum
7.3L IDI (Non-Powerstroke) Diesels 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 5 Old 06-11-2007, 10:31 AM Thread Starter
Serving Our Country!
 
payne5757's Avatar
 
Join Date: Sep 2006
Location: middle of nowhere
Posts: 1,103
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
94 IDI 7.3l non-turbo

We recently got this truck at work back to running and ever since, it has slowly gotten harder and harder to start. It has very strong batteries and the glow plugs and relay are working. When an injector pump starts to go out isnt this what happens?? After we got the truck back to running after another problem it seemed really underpowered compared to a friend with a similar truck and it has slowly become harder and harder to start and now it just turns over. I dont have nearly as much experience with diesels as gas motors but everything seems to be pointing at the injector pump and I would like all u guys's opinions. BTW, it is getting fuel all the way to the schrader valve at the filter. thanks


p.s. If the injectors were firing, wouldnt exhaust smell like raw fuel in this mechanical motor because it only smells like soot and old burnt exhaust. I figured this would be like a flooded carb car and would reak. Please correct me if Im wrong

2000 Ford F250 Super Duty Powerstroke ( 7,460lbs 5in rough country lift, 18in XD Revolvers, 35in Dura Grapplers, bilsteins all around, 4in.MBRPstraight pipe,WW,TS 6 pos chip,TS Monitor w/HUD,Tymar,map fooler,foil delete, zoodad, Kenwood stereo, pioneer 6x8s, JL 500V1 amp, and one JL12w7)
payne5757 is offline  
post #2 of 5 Old 06-11-2007, 12:00 PM
ADMIN AND TECH


 
SCUFFY828's Avatar
 
Join Date: Oct 2006
Location: winston salem north carolina
Posts: 9,314
Thanks: 0
Thanked 11 Times in 11 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
check base fuel pressure first at fuel filter housing and if it is between 5 and 7 lbs , replace injection pump, thats usually what it is

SCUFFY828@POWERSTROKE.ORG
ITS STOCK
SCUFFY828 is offline  
post #3 of 5 Old 06-13-2007, 06:04 AM Thread Starter
Serving Our Country!
 
payne5757's Avatar
 
Join Date: Sep 2006
Location: middle of nowhere
Posts: 1,103
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
What is the normal base fuel pressure??

2000 Ford F250 Super Duty Powerstroke ( 7,460lbs 5in rough country lift, 18in XD Revolvers, 35in Dura Grapplers, bilsteins all around, 4in.MBRPstraight pipe,WW,TS 6 pos chip,TS Monitor w/HUD,Tymar,map fooler,foil delete, zoodad, Kenwood stereo, pioneer 6x8s, JL 500V1 amp, and one JL12w7)
payne5757 is offline  
post #4 of 5 Old 06-13-2007, 06:33 AM
ADMIN AND TECH


 
SCUFFY828's Avatar
 
Join Date: Oct 2006
Location: winston salem north carolina
Posts: 9,314
Thanks: 0
Thanked 11 Times in 11 Posts
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
Feedback Score: 0 reviews
should be 5-7 lbs of pressure

SCUFFY828@POWERSTROKE.ORG
ITS STOCK
SCUFFY828 is offline  
post #5 of 5 Old 07-01-2007, 10:27 PM
Powerstroke.org Rookie
 
Petri317's Avatar
 
Join Date: Jul 2007
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
Mentioned: 0 Post(s)
Quoted: 0 Post(s)
Feedback Score: 0 reviews
After checking that pressure reading, if it is below 5-7PSI, I would replace the mechanical lift pump (a ~40 dollar part) before suspecting the Injection Pump (a 4-500 dollar part) is bad. The lack of adequate fuel caused by a failing lift or injection pump describes your symptoms to a tee.

Smokey- 1989 Ford F-250 XLT Lariat Regular Cab 4X4 1984 N/A 6.9L with ARP studs,Rebuilt heads, Head and upper end gaskets,Rebuilt IP(2nd rebuild in 4 months), Holley Red Electric Pump, New injectors, Walker BTM with 3" exhaust system, Rebuilt T19,Resealed 1356, 4:10s, 33x12.5x16.5 All terrains, Autometer Gauges,clean interior with new vinyl upholstery, herculined-floor, Pioneer cd player and Sony speakers, good exterior with the exception of the crappy Ford auto-peel hood paint
Petri317 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