Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Injector Problem??

Old Oct 15, 2011 | 10:58 AM
  #1  
savage250's Avatar
savage250
Thread Starter
|
Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
Question Injector Problem??

Hi, I have been reading on here for awhile, and from what I've gathered I have at least one injector that isn't working properly...here are the symptoms:

- Blue smoke at start up, and there is some until it warms up
- With engine warm, if I rev to 3k, it spins up to 2500 fine, then hesitates, blows a cloud of blue smoke, then revs up to 3000....everytime.
- I've already replaced the o-rings on the injectors
- Once the engine is warm when I am stopping and push the clutch in, the RPM's dip to around 600, and the truck stutters...sometimes worse than others, then levels out. When it's cold, it does not do this at all, it always returns to exactly 650RPM with no dip, or stutter.

Since I've already changed the o-rings, it seems to me I have at least one injector not working all the time, does that sound right?
 
Reply
Old Oct 15, 2011 | 11:58 AM
  #2  
DRRXR's Avatar
DRRXR
Post Fiend
Joined: Feb 2009
Posts: 8,773
Likes: 1
From: Texas Coast
i suspect that you changed the UVCWH when you changed the o-rings however you may want to inspect the connections there and complete a buzz test
 
Reply
Old Oct 15, 2011 | 12:49 PM
  #3  
fordpride's Avatar
fordpride
Post Fiend
Joined: Dec 2009
Posts: 15,505
Likes: 18
From: Livoina,La
Afternoon Rock.

It sounds like a oring problem. Your sure you got them in without rolling any of the orings
 
Reply
Old Oct 15, 2011 | 02:17 PM
  #4  
savage250's Avatar
savage250
Thread Starter
|
Tuned
Joined: Jun 2004
Posts: 275
Likes: 0
From: Alberta, Canada
I did replace both gaskets and all the harnesses underneath, and new glow plugs while I was at it. There was no indication of bad connections or burnt connections, but I figured why not replace it all anyway.

No I'm not sure if I rolled one....Do you think I should pull them again and look, or would it likely "roll" back into place when I pull it out?

Maybe this is the trucks way of saying it needs Stage 1's instead...Has anyone use Full Force Stage 1's?
 
Reply
Old Oct 15, 2011 | 03:00 PM
  #5  
Action4478's Avatar
Action4478
Hotshot
Joined: Aug 2006
Posts: 10,764
Likes: 39
You may want to pull the covers & inspect the injector spill spouts when the oil is cold . See if the are all spitting oil in equal amounts . It may be a poppet issue ...If you damaged an O ring i would think it would run worse when warm ..
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
MONAVIERONJON
1999 - 2003 7.3L Power Stroke Diesel
10
Nov 18, 2014 09:38 PM
Rxracer27
1999 - 2003 7.3L Power Stroke Diesel
17
Jan 5, 2014 04:59 PM
lalh20
1999 - 2003 7.3L Power Stroke Diesel
10
Nov 24, 2012 07:57 AM
freedawg_101
1994.5 - 1997 7.3L Power Stroke Diesel
7
Mar 9, 2012 10:05 PM
masterc16
1994.5 - 1997 7.3L Power Stroke Diesel
1
Dec 7, 2006 06:01 AM


Thread Tools
Search this Thread

All times are GMT -5. The time now is 01:54 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE