1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

wierd timeing issue

Thread Tools
 
Search this Thread
 
  #46  
Old 04-22-2012, 08:03 AM
82f100460's Avatar
82f100460
82f100460 is offline
Posting Guru
Join Date: Jan 2012
Location: Dallas, GA
Posts: 1,410
Likes: 0
Received 0 Likes on 0 Posts
For the EGR...there are so many different configurations that it's dificult to guess how yours was originally hooked up.

We may have asked this already but do you have the original emissions sticker on the top radiator support? That should show you how the EGR was originally plumbed and the best info.
 
  #47  
Old 04-22-2012, 08:18 AM
Gary Lewis's Avatar
Gary Lewis
Gary Lewis is offline
Posting Legend
Join Date: Jul 2010
Location: Northeast, OK
Posts: 32,866
Likes: 0
Received 26 Likes on 24 Posts
Originally Posted by thatguy931
ok so that hot airtube can that be a tube that tuns down to the exhaust manifold and ends just prior to the edge to pick up hot air? and how can i check the egr to see if its working or not? and what should a working egr be hhoked to, ported?
I'm not sure I understand what you are asking as I'm having a hard time reading it. Could you use capitalization to let me see the start of sentences, complete sentences, etc? As said, I'm struggling to read some of your posts and know for a fact that many on FTE won't bother to try - and many of those are the "big boys" that know what they are talking about.

Anyway, I'll try to decipher it this time. I'm not familiar with the hot air tube on a six, but typically the hot air tube is a closed loop. It starts at the air cleaner or carb inlet, loops through the exhaust manifold, and then goes into the choke housing.

I don't know how your EGR is supposed to be connected, but the vacuum diagram on the radiator support should show that. As for checking it, you should be able to see the pintle on the EGR move when you hit it with full vacuum. And the engine won't like full EGR at idle so you can tell if it does move whether the passages are full of carbon or not.
 
  #48  
Old 04-22-2012, 08:43 AM
82f100460's Avatar
82f100460
82f100460 is offline
Posting Guru
Join Date: Jan 2012
Location: Dallas, GA
Posts: 1,410
Likes: 0
Received 0 Likes on 0 Posts
This is how the choke tube should be arranged for the 80-86 300 I6's
 
Attached Images  
  #49  
Old 04-22-2012, 08:47 AM
82f100460's Avatar
82f100460
82f100460 is offline
Posting Guru
Join Date: Jan 2012
Location: Dallas, GA
Posts: 1,410
Likes: 0
Received 0 Likes on 0 Posts
And this is your EGR. Note is says "typical" and really can't tell how all the vacuum lines are connected. More of a mechanical drawing for the EGR valve itself.
 
Attached Images  
  #50  
Old 04-22-2012, 08:48 AM
Gary Lewis's Avatar
Gary Lewis
Gary Lewis is offline
Posting Legend
Join Date: Jul 2010
Location: Northeast, OK
Posts: 32,866
Likes: 0
Received 26 Likes on 24 Posts
Kevin - Sorry, but I STILL can't rep you! Guess I'm too stingy with my reps, so I'm going on a campaign to search and reward. That way I may be able to rep you next time - which probably won't be long in coming given your willingness to help. GOOD JOB!
 
  #51  
Old 04-22-2012, 10:05 AM
ctubutis's Avatar
ctubutis
ctubutis is offline
Moderator
Join Date: Nov 2007
Location: Denver Metro Area, CO
Posts: 22,405
Received 72 Likes on 56 Posts
A working EGR valve is connected to a series of VCVs - Vacuum Control Valves - that allow it to operate only when the engine is warmed up.

Here is one for reference, they come in multiple colors & nipple variants:




Older vehicles, the EGR was connected to only one such VCV with probably only one delay valve inline.

Look on the label under your hood on the radiator support to see the exact routing that came from the factory.

One way to see if it's working is to apply vacuum to it and watch it, you should be able to see the diaphragm open and close. This won't tell you if the insides are all carboned up or not but you can at least see if it's trying to open & close.
 
  #52  
Old 04-22-2012, 10:29 AM
thatguy931's Avatar
thatguy931
thatguy931 is offline
Freshman User
Thread Starter
Join Date: Mar 2012
Posts: 36
Likes: 0
Received 0 Likes on 0 Posts
Ok guys got new stuff to check out. Tryed my fixes out this morning after truck sat all night. It started first first turn and stumbled onto its face. After the third try it stayed running.

As for the egr i will take some pictures and post them i have a feeling iam missing alot of stuff..... Thanks tons for all the help!!!
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Viger81
1973 - 1979 F-100 & Larger F-Series Trucks
6
01-30-2017 01:11 PM
RevLemmon
Excursion - King of SUVs
50
08-23-2014 12:05 PM
LSO1123
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
4
04-07-2013 02:43 PM
Bluethunder3320
1987 - 1996 F150 & Larger F-Series Trucks
10
12-24-2012 07:39 AM
mcastleberg
Electrical Systems/Wiring
8
12-10-2003 10:58 PM



Quick Reply: wierd timeing issue



All times are GMT -5. The time now is 08:59 AM.