7.8 smokes on start up - Ford Truck Enthusiasts Forums
 

Go Back   Ford Truck Enthusiasts Forums > Super Duty/Heavy Duty > Large Truck
Log In 


Large Truck My truck is bigger than yours. The forum for 2+ ton trucks (all years), COE's, Louisville's, Big-Job's etc.

7.8 smokes on start up

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 10-02-2013, 11:58 AM
Rlawmulching Rlawmulching is offline
New User
 
Join Date: Oct 2013
Posts: 13
Rlawmulching is starting off with a positive reputation.
7.8 smokes on start up

so, as I mentioned in a previous thread, i'm working on my 1989 f800. when the truck first starts up when cold, it smokes for about 20 minutes then clears up. no loss of power. any ideas?
Reply With Quote
  #2  
Old 10-02-2013, 10:59 PM
nevrenufhp's Avatar
nevrenufhp nevrenufhp is offline
Posting Guru
 
Join Date: Feb 2003
Location: Modesto, CA
Posts: 2,287
nevrenufhp has a good reputation on FTE.nevrenufhp has a good reputation on FTE.nevrenufhp has a good reputation on FTE.
That is very common with the 6.6 and 7.8 engines. You can double check the timing, and fuel pressure, but I've seen quite a few do that and run fine for many years.
__________________
Dale.
turn up diesel fuel rate site of mine
67 F100, 300, 4spd, Offy 'C', Edelbrock 500, 274*/.518" cam, heddder, 3G alt, hydroboost.
08 VW R32.
Reply With Quote
  #3  
Old 10-03-2013, 09:26 AM
Rlawmulching Rlawmulching is offline
New User
 
Join Date: Oct 2013
Posts: 13
Rlawmulching is starting off with a positive reputation.
could the turbo be leaking a little after sitting over night? I've seen that happen on logging equipment. also, where can I pull a boost gauge off of this system?
Reply With Quote
  #4  
Old 10-03-2013, 09:41 AM
nevrenufhp's Avatar
nevrenufhp nevrenufhp is offline
Posting Guru
 
Join Date: Feb 2003
Location: Modesto, CA
Posts: 2,287
nevrenufhp has a good reputation on FTE.nevrenufhp has a good reputation on FTE.nevrenufhp has a good reputation on FTE.
It is possible, yes.
There should be a couple fittings on the intake manifold you can use. The intake is dry, so any port will be air.
Reply With Quote
  #5  
Old 10-03-2013, 10:08 PM
Pete Kildow Pete Kildow is offline
Senior User
 
Join Date: Jun 2013
Posts: 247
Pete Kildow is starting off with a positive reputation.
Mine is clean burning on startup. And only shows fuel smoke when getting on it. And need to turn the smoke screw back on it to cut part of that out. As it leaves 2 trails of smoke at every shift or when pulling. Will blow smoke 30ft behind me under a load.

Is yours fuel smoke or oil smoke? Wondering if you have something leaking oil down into the motor and taking a while to burn it off? Or fuel and having to burn it off?
Reply With Quote
  #6  
Old 10-09-2013, 02:46 PM
rogue40's Avatar
rogue40 rogue40 is offline
Posting Guru
 
Join Date: Oct 2007
Location: Sedro-Woolley, WA
Posts: 1,140
rogue40 has a great reputation on FTE.rogue40 has a great reputation on FTE.rogue40 has a great reputation on FTE.rogue40 has a great reputation on FTE.rogue40 has a great reputation on FTE.
I can't find if the glow plugs go through a warm up cycle like they do with the pickups to eliminate fuel smoke after startup.
Do they?
__________________
65 F100 cc "Great White"
66 F100 shortbox "Blue"
91 Explorer work rig "The Dumpster"
77 F250 4x4 "Big Red"

Dang, I'm down to only 4 rigs!
Reply With Quote
  #7  
Old 10-09-2013, 03:32 PM
Pete Kildow Pete Kildow is offline
Senior User
 
Join Date: Jun 2013
Posts: 247
Pete Kildow is starting off with a positive reputation.
Quote:
Originally Posted by rogue40 View Post
I can't find if the glow plugs go through a warm up cycle like they do with the pickups to eliminate fuel smoke after startup.
Do they?
No glow plugs on these. Just starts more like a gas motor.
Pete
Reply With Quote
 
 
 
Reply


Similar Threads
Thread Thread Starter Forum Replies Last Post
Smoke Smoke Smoke..... rofl_copter3 6.0L Power Stroke Diesel 6 06-15-2014 06:38 PM
white smoke bobbyt89 6.0L Power Stroke Diesel 5 03-28-2014 12:29 PM
engine smoking 77 2wd 1973 - 1979 F-100 & Larger F-Series Trucks 6 11-04-2012 07:03 AM
Black Smoke...Causes? What to Do? skychaney General Diesel Discussion 28 01-10-2008 07:25 PM
white smoke from tail pipe weldingfreak 1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks 6 02-12-2006 03:10 PM


Go Back   Ford Truck Enthusiasts Forums > Super Duty/Heavy Duty > Large Truck

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump



All times are GMT -5. The time now is 01:21 AM.

 

Powered by vBulletin® Version 3.8.7 AC2
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Terms of Service - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup