Notices
Pre-Power Stroke Diesel (7.3L IDI & 6.9L) Diesel Topics Only

Blue smoke and chugging

Thread Tools
 
Search this Thread
 
Old Dec 29, 2015 | 02:11 PM
  #1  
BrendanFitz's Avatar
BrendanFitz
Thread Starter
|
New User
Joined: Dec 2015
Posts: 12
Likes: 0
Blue smoke and chugging

I have a 94 f250 7.3L turbo diesel. It is starting to chug more and is smoking a ton. The smoke is kind of blue. Any ideas of what it can be?
 
Reply
Old Dec 29, 2015 | 02:23 PM
  #2  
PlumCrazy7's Avatar
PlumCrazy7
Laughing Gas
Joined: Dec 2013
Posts: 884
Likes: 7
Originally Posted by BrendanFitz
I have a 94 f250 7.3L turbo diesel. It is starting to chug more and is smoking a ton. The smoke is kind of blue. Any ideas of what it can be?
Sounds like you are losing rings. How many miles? Does the smoke clear up with throttle?
 
Reply
Old Dec 29, 2015 | 08:22 PM
  #3  
BrendanFitz's Avatar
BrendanFitz
Thread Starter
|
New User
Joined: Dec 2015
Posts: 12
Likes: 0
149k miles and no it gets thicker, unless I shut it off and turn it on 2 or 3 times
 
Reply
Old Dec 29, 2015 | 08:41 PM
  #4  
Macrobb's Avatar
Macrobb
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Originally Posted by BrendanFitz
149k miles and no it gets thicker, unless I shut it off and turn it on 2 or 3 times
Um... explain more.

Without the "turn it off and on" thing, I'd assume the IP's going; at the very least you can advance it a bit and see if it helps.
 
Reply
Old Dec 29, 2015 | 09:13 PM
  #5  
BrendanFitz's Avatar
BrendanFitz
Thread Starter
|
New User
Joined: Dec 2015
Posts: 12
Likes: 0
Originally Posted by Macrobb
Um... explain more.

Without the "turn it off and on" thing, I'd assume the IP's going; at the very least you can advance it a bit and see if it helps.
I feel like it's a combo of glow plugs and injectors.
 
Reply
Old Dec 29, 2015 | 09:23 PM
  #6  
Macrobb's Avatar
Macrobb
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Glow plugs only affect when it first starts; once the engine's run for 30 seconds or so, the GPs have zero affect on anything.

Injectors... could be. I'm sure replacing them wouldn't hurt.
 
Reply
Old Dec 29, 2015 | 10:17 PM
  #7  
BrendanFitz's Avatar
BrendanFitz
Thread Starter
|
New User
Joined: Dec 2015
Posts: 12
Likes: 0
Injectors... could be. I'm sure replacing them wouldn't hurt.[/QUOTE]

It'd hurt my bank
 
Reply
Old Dec 30, 2015 | 12:23 AM
  #8  
PlumCrazy7's Avatar
PlumCrazy7
Laughing Gas
Joined: Dec 2013
Posts: 884
Likes: 7
At $200-$300 for an entire set, they are probably the cheapest diesel injectors there are.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-1

Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-2

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-3

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-4

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-5

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-6

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-7

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-8

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-9

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
Old Dec 30, 2015 | 07:52 AM
  #9  
BrendanFitz's Avatar
BrendanFitz
Thread Starter
|
New User
Joined: Dec 2015
Posts: 12
Likes: 0
Originally Posted by PlumCrazy7
At $200-$300 for an entire set, they are probably the cheapest diesel injectors there are.
Any recommendations on what injectors to get?
 
Reply
Old Dec 30, 2015 | 12:33 PM
  #10  
PlumCrazy7's Avatar
PlumCrazy7
Laughing Gas
Joined: Dec 2013
Posts: 884
Likes: 7
Originally Posted by BrendanFitz
Any recommendations on what injectors to get?
Investigate your area, there should be a quality diesel shop that farmers, construction companies, etc. use. This type of shop has experience with older stuff and can get you quality parts. Alternatively, you can go to idiperformance.com, a lot of people swear by his stuff.
 
Reply
Old Dec 30, 2015 | 06:36 PM
  #11  
Macrobb's Avatar
Macrobb
Postmaster
Joined: Dec 2011
Posts: 3,860
Likes: 7
Originally Posted by PlumCrazy7
Investigate your area, there should be a quality diesel shop that farmers, construction companies, etc. use. This type of shop has experience with older stuff and can get you quality parts. Alternatively, you can go to idiperformance.com, a lot of people swear by his stuff.
Justin @ R&D actually has new injector nozzles custom made, something that few others have. The people making injectors(like delphi) stopped doing it a year or two ago, so now it's just rebuilt ones out there, mostly.
Justin had a set reverse-engineered and new ones made, and they seem to work nicely. I'd buy from him, because I've had plenty of issues with used sets... thought I was getting a deal, and 10K later I've got issues.
 
Reply
Old Jan 1, 2016 | 11:32 PM
  #12  
speedwrench72's Avatar
speedwrench72
Posting Guru
Joined: Dec 2012
Posts: 1,065
Likes: 2
From: western washington
the chugging has me thinking bad cam or valves, you can get a compression tester that fits in the glow plug hole. run engine for a trip into town then remove one glow plug at a time and test compression, remove the FSS wire so engine will not start...this will tell you the condition of the engine....if it sounds like its back fireing into the intake it could be burnt or bent valves from broken off tips of gp's. hope you figure it out..
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
waystro
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
4
Mar 2, 2012 08:45 PM
big island
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
3
Aug 25, 2010 10:43 AM
Blueovals&Blacksmoke
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
5
Sep 25, 2008 06:22 PM
Dieselamour
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
2
Oct 13, 2007 08:44 PM
ALL BOY
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
1
Dec 5, 2005 07:18 AM




All times are GMT -5. The time now is 10:26 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