Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1948 - 1956 F1, F100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1948 - 1956 F1, F100 & Larger F-Series Trucks Discuss the Fat Fendered and Classic Ford Trucks

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
LinkBack Thread Tools Search this Thread
  #1 (permalink)  
Old 07-04-2014, 10:29 PM
packrat56's Avatar
packrat56 packrat56 is offline
Posting Guru
 
Join Date: Apr 2004
Location: Willamette Valley, Oregon
Posts: 1,392
packrat56 is starting off with a positive reputation.
Edelbrock/Weber on a 1969 390 crappy idle when its hot out

Have a rig with a 69 390, has an almost new Edelbrock/Weber 4bbl..

Runs great... Starts fine... Engine is fresh...

Usually idles great..

then all of the sudden, even before the engine gets hot, it has a crappy, lumpy, almost stalling kinda idle.. SOmetimes it does stall.. Better last winter, but not positive its heat related.. Changed the fuel lines to rubber and moved off the manifold.. Has a nice Edelbrock manifold..

HELP!!!
__________________
Packrat56
56 F-100...63 Thunderbird...72 Scamp...73 HD FLH...13 HD FLS...70 14' Seaswirl


Willamette Valley, Oregon
Reply With Quote
  #2 (permalink)  
Old 07-04-2014, 11:23 PM
underthebridgejim's Avatar
underthebridgejim underthebridgejim is online now
Posting Guru
 
Join Date: Dec 2006
Location: paradise, northern calif.
Posts: 1,804
underthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud of
I'm not the one to answer your question, but I just typed in Edelbrock on the net , there are pages and pages of Edelbrock carb info that may be of help to you, while you wait for someone to chime in. Could an electric choke be masking a problem, and then stopping when it opens up? Like I said, I'm not a carb expert. Best of luck. (Google Edelbrock carb trouble shooting?)
__________________
Jimmy / 1950 F-1 / 302/C4
Reply With Quote
  #3 (permalink)  
Old 07-04-2014, 11:39 PM
Giesterfarher™'s Avatar
Giesterfarher™ Giesterfarher™ is offline
Senior User
 
Join Date: Jun 2011
Location: Fresno, California
Posts: 175
Giesterfarher™ is starting off with a positive reputation.
I had a similar problem with my 69 Galaxies 390. A friend gave me a phenolic carb spacer to try. His theory was, the gas was getting too hot and boiling in the bowl, which leaned the mixture out.
It seemed logical, so I tested the theory by unhooking the electric choke's coil and operated it manually while the engine was acting up. Closed the choke partially, and the idle smoothed out somewhat. Good enough. I put the phenolic spacer in, and never had another issue with it.
__________________
My inspiration. Been waiting for 42 years. The wait is finally over.

http://i1136.photobucket.com/albums/n491/Giesterfarher/rsz_truck.jpg
Reply With Quote
  #4 (permalink)  
Old 07-04-2014, 11:42 PM
underthebridgejim's Avatar
underthebridgejim underthebridgejim is online now
Posting Guru
 
Join Date: Dec 2006
Location: paradise, northern calif.
Posts: 1,804
underthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud of
This link may help.
Attached Images
File Type: pdf carb_troubleshooting_guide.pdf (37.3 KB, 20 views)
__________________
Jimmy / 1950 F-1 / 302/C4
Reply With Quote
  #5 (permalink)  
Old 07-05-2014, 01:03 AM
underthebridgejim's Avatar
underthebridgejim underthebridgejim is online now
Posting Guru
 
Join Date: Dec 2006
Location: paradise, northern calif.
Posts: 1,804
underthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud ofunderthebridgejim has much to be proud of
Quote:
Originally Posted by Giesterfarher™ View Post
I had a similar problem with my 69 Galaxies 390. A friend gave me a phenolic carb spacer to try. His theory was, the gas was getting too hot and boiling in the bowl, which leaned the mixture out.
It seemed logical, so I tested the theory by unhooking the electric choke's coil and operated it manually while the engine was acting up. Closed the choke partially, and the idle smoothed out somewhat. Good enough. I put the phenolic spacer in, and never had another issue with it.
I also have a spacer between my Edel. carb and manifold, and have had no problems with heat either.
__________________
Jimmy / 1950 F-1 / 302/C4
Reply With Quote
  #6 (permalink)  
Old 07-05-2014, 01:11 AM
seaves46 seaves46 is offline
Senior User
 
Join Date: Mar 2004
Location: australia
Posts: 215
seaves46 is starting off with a positive reputation.
Does it have an automatic choke ?
If it does , has the idle been adjusted correctly for when the choke is off .
Also check idle mixture with the choke off and engine warm .
__________________
Scott

1956 f100
1933 ford pickup
1936 ford 3 window coupe
1947 ford club coupe
Reply With Quote
  #7 (permalink)  
Old 07-05-2014, 09:00 AM
packrat56's Avatar
packrat56 packrat56 is offline
Posting Guru
 
Join Date: Apr 2004
Location: Willamette Valley, Oregon
Posts: 1,392
packrat56 is starting off with a positive reputation.
I did pull the air cleaner and visually inspect while it was stumbling,,

The electric choke was fully open..

It does have a spacer, but im not sure what its made of, ill check

If it performed perfectly for months, and sometimes perfectly now (inertmitant issue) then is it not unlikely that its just an adjustment??
__________________
Packrat56
56 F-100...63 Thunderbird...72 Scamp...73 HD FLH...13 HD FLS...70 14' Seaswirl


Willamette Valley, Oregon
Reply With Quote
  #8 (permalink)  
Old 07-05-2014, 12:12 PM
Rimrock F1's Avatar
Rimrock F1 Rimrock F1 is offline
Elder User
 
Join Date: Apr 2013
Location: Rimrock AZ
Posts: 512
Rimrock F1 has a very good reputation on FTE.Rimrock F1 has a very good reputation on FTE.Rimrock F1 has a very good reputation on FTE.
Quote:
Originally Posted by packrat56 View Post
I did pull the air cleaner and visually inspect while it was stumbling,,

The electric choke was fully open..

It does have a spacer, but im not sure what its made of, ill check

If it performed perfectly for months, and sometimes perfectly now (inertmitant issue) then is it not unlikely that its just an adjustment??
It could be that deposits have formed in the idle circuit. As the choke warms up and opens the engine goes lean. Turn your idle mixture screws 1/4 turn rich (counter clockwise, if you have a digital watch you'll have to figure this out on your own). See how it runs after adjustment, this literally takes a couple seconds of work and is easily put back if it doesn't work.
__________________
Mike.
1952 F-1 (Belle Pepper)
1956 Fairlane (Orreo)
2013 Taurus (Ginger)
Reply With Quote
  #9 (permalink)  
Old 07-05-2014, 06:07 PM
eman92082's Avatar
eman92082 eman92082 is offline
Glass is empty - Fill now
 
Join Date: Apr 2007
Location: Valley Center, California
Posts: 1,648
eman92082 has a good reputation on FTE.eman92082 has a good reputation on FTE.
All good points and a good phenolic spacer would be advisable. There are also aluminum shield plates I've had success with. Lastly, check your inlet pressure. If it's high, it may not care when cold, but could get cranky when warm.
__________________
E-Dawgie
'49 F-1
'00 F-150 Lariat

All we are is "Ducks" in the wind.....
Reply With Quote
  #10 (permalink)  
Old 07-05-2014, 06:35 PM
truckeemtnfords truckeemtnfords is offline
Posting Guru
 
Join Date: Nov 2006
Location: Truckee, CA
Posts: 1,521
truckeemtnfords has a very good reputation on FTE.truckeemtnfords has a very good reputation on FTE.truckeemtnfords has a very good reputation on FTE.
You say it idles like crap, but how does it run/drive off idle? Have built carbs for years and it sounds like a fuel supply issue to me. Have seen it many times, especially on the Carter/Edelbrock/Weber carbs because the jets are on the bottom of the fuel bowls. You might have a piece of junk that got into the fuel bowl that is causing your problem. Something like ten screws and the center bolt and the top comes off. Take the top off and check inside the bowls, clean out all the gas and spray carb cleaner through all the orifices, pull the idle screws and do the same with the carb cleaner. Change your fuel filter, fuel with alcohol (winter blend or E85) can cause the glues in some filters to come apart and you might be passing those pieces through the carb, hence only occasional issues.

Good luck and let us know what you find.
__________________
Dave
2002 F-250 XLT 4x4 7.3 Auto CC LB
1955 F-100 302 T-5 9"
Reply With Quote
  #11 (permalink)  
Old 07-05-2014, 09:25 PM
packrat56's Avatar
packrat56 packrat56 is offline
Posting Guru
 
Join Date: Apr 2004
Location: Willamette Valley, Oregon
Posts: 1,392
packrat56 is starting off with a positive reputation.
sooo...
1. I have an alluminum spacer
2. I did try 1/4 turn richer yesterday and it DID help.. What does that mean?
3. Have not yet opened it up but sure will

oh, and it runs/drives fine when the idle is crappy..no stumble
__________________
Packrat56
56 F-100...63 Thunderbird...72 Scamp...73 HD FLH...13 HD FLS...70 14' Seaswirl


Willamette Valley, Oregon
Reply With Quote
  #12 (permalink)  
Old 07-06-2014, 10:36 AM
Rimrock F1's Avatar
Rimrock F1 Rimrock F1 is offline
Elder User
 
Join Date: Apr 2013
Location: Rimrock AZ
Posts: 512
Rimrock F1 has a very good reputation on FTE.Rimrock F1 has a very good reputation on FTE.Rimrock F1 has a very good reputation on FTE.
Quote:
Originally Posted by packrat56 View Post
sooo...
1. I have an alluminum spacer
2. I did try 1/4 turn richer yesterday and it DID help.. What does that mean?
3. Have not yet opened it up but sure will

oh, and it runs/drives fine when the idle is crappy..no stumble
If it runs better as you richen the idle mix and it ran fine before it means, something has made the engine run lean at idle. This could be dirt in the carb or possibly a vacuum leak, leaks can become worse as a engine warms. Even a weak fuel pump that lowers the float level. The only way to be sure about debris in the carb is to remove the top and inspect it ( you may find the bowls clean and still have a blockage in the passages, overhaul time). spraying carb cleaner around the gaskets and fittings on the intake and listening for a change in the way the engine runs can often find a intake leak. You car also richen the idle even more and see how it runs.
__________________
Mike.
1952 F-1 (Belle Pepper)
1956 Fairlane (Orreo)
2013 Taurus (Ginger)
Reply With Quote
  #13 (permalink)  
Old 07-06-2014, 05:34 PM
packrat56's Avatar
packrat56 packrat56 is offline
Posting Guru
 
Join Date: Apr 2004
Location: Willamette Valley, Oregon
Posts: 1,392
packrat56 is starting off with a positive reputation.
Opened it up.. There was a bit of crap in there.. Always a mystery how it gets in there past a filter..

Got the crap out.. Sprayed carb clnr in the jets and passages..

Idles better Thanks.....


When it got hot driving it today, it would not idle at all.. Im thinking thats the spacer??

Looking to order, Jegs or Summet and no listing for a Edel 1411... Are all edelbrock bases the same?
__________________
Packrat56
56 F-100...63 Thunderbird...72 Scamp...73 HD FLH...13 HD FLS...70 14' Seaswirl


Willamette Valley, Oregon
Reply With Quote
  #14 (permalink)  
Old 07-06-2014, 06:46 PM
ALBUQ F-1's Avatar
ALBUQ F-1 ALBUQ F-1 is online now
postin' fool
 
Join Date: Jul 2004
Location: Albuquerque area
Posts: 16,576
ALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud ofALBUQ F-1 has much to be proud of
Having wrestled the immense intake manifold on a 390, I'd suspect a leak at the joint(s) to the head(s). Try a re-torque first.
__________________
Ross
1952 F-1 Flat V8 3-on-the-tree
MSD, Rochester 2G, Red's Headers
Reply With Quote
  #15 (permalink)  
Old 07-06-2014, 08:10 PM
Giesterfarher™'s Avatar
Giesterfarher™ Giesterfarher™ is offline
Senior User
 
Join Date: Jun 2011
Location: Fresno, California
Posts: 175
Giesterfarher™ is starting off with a positive reputation.
Quote:
Originally Posted by packrat56 View Post
Opened it up.. There was a bit of crap in there.. Always a mystery how it gets in there past a filter..

Got the crap out.. Sprayed carb clnr in the jets and passages..

Idles better Thanks.....


When it got hot driving it today, it would not idle at all.. Im thinking thats the spacer??

Looking to order, Jegs or Summet and no listing for a Edel 1411... Are all edelbrock bases the same?

4 bbl Carb bases come in two basic designs. Spread Bore, with large secondaries and smaller primaries, and Square Bore, having both primary and secondary butterflies approximately the same size.

These should work for your Edelbrock. I'll leave the choice between open center and square bore to you. Either will work with a square bore carb, but the open one will work with both types of carbs unless you have huge secondaries, like in a Holley 850. Even then, a little judicious work with a Dremel with do the trick.

http://www.summitracing.com/search/p...etor%20Spacers
__________________
My inspiration. Been waiting for 42 years. The wait is finally over.

http://i1136.photobucket.com/albums/n491/Giesterfarher/rsz_truck.jpg
Reply With Quote
Old 07-06-2014, 08:10 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1948 - 1956 F1, F100 & Larger F-Series Trucks

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel mileage weber/cliffords Black Ford XLT Ford Inline Six, 200, 250, 4.9L / 300 12 06-30-2013 07:22 AM
Intermittent stall/idle issue 1969 390 packrat56 1948 - 1956 F1, F100 & Larger F-Series Trucks 47 10-15-2012 10:38 PM
390 timing soco 1967 - 1972 F-100 & Larger F-Series Trucks 20 08-24-2012 07:02 PM
A little cylinder head ID help stickbow9 335 Series- 5.8/351M, 6.6/400, 351 Cleveland 4 08-01-2012 12:01 PM
General crankcase vent question stickbow9 1973 - 1979 F-100 & Larger F-Series Trucks 4 07-26-2012 10:55 AM



All times are GMT -5. The time now is 10:42 PM.


Powered by vBulletin® Version 3.7.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - 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. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup