Go Back   The Ford Barn > General Discussion > Model A (1928-31)

Sponsored Links (Register now to hide all advertisements)

Reply
 
Thread Tools Display Modes
Old 03-05-2012, 09:09 AM   #1
tintoptexan
Member
 
tintoptexan's Avatar
 
Join Date: May 2010
Location: Granbury, Texas
Posts: 63
Default EF V-8 guy needs 4 cyl help

I hope this is the proper place to ask this. I see a lot of knowlege here and would like to tap it for a problem i'm having. I am working on a 1965 Continental Red Seal 4 cylinder that is on my welding machine. It will only run on full or at least 3/4 choke. When it is excited by striking an arc, the governor pulls it to high RPM and it dies. It has a new Zenith Carb and there are 3 adjustments, idle screw, fuel/air mixture screw and the adjustment at the bottom of the bowl that regulates the fuel from the bowl to the venturi, (Forgot the name). Compresion checked out at 55 to 60 psi with no more than 5 psi difference between cylinders. I have not done a leak down test yet but plan on it to see if maybe there is not enough vacuum to pull the fuel up through the updraft carb. If anyone has any thoughts they would like to share, I would sure appreciate them. Thanks, and have a great day. Joe
__________________
Joe.
tintoptexan is offline   Reply With Quote
Old 03-05-2012, 09:16 AM   #2
Bruce in southern OH
Senior Member
 
Bruce in southern OH's Avatar
 
Join Date: May 2010
Location: Proctorville
Posts: 1,572
Default Re: EF V-8 guy needs 4 cyl help

First remove the air cleaner, I have had stationary motors the air cleaner was the restriction, next the fuel filter, if it has one remove and run with out the fuel filter, new gas eats them up and they stop up easy. The Carb is simple, remove from engine and separate parts and clean, reassemble. Check the gasket and replace between intake and carb. Let us know, sure someone else will give advice. One step at a time, Bruce
Bruce in southern OH is offline   Reply With Quote
Sponsored Links (Register now to hide all advertisements)
Old 03-05-2012, 09:21 AM   #3
MAG
Senior Member
 
MAG's Avatar
 
Join Date: May 2010
Location: Austin, Texas
Posts: 793
Default Re: EF V-8 guy needs 4 cyl help

The problem could be a leaking manifold and or carburetor gasket. With the engine running, spray some WD40 around the manifold and carburetor area to see if there is any change in the way the engine runs. If a change is noted a leak is in that area. New gaskets may correct the problem
__________________
I noticed the harder I work the luckier I get!
MAG is offline   Reply With Quote
Old 03-05-2012, 09:37 AM   #4
Keith True
Senior Member
 
Keith True's Avatar
 
Join Date: May 2010
Location: Epping N.H.
Posts: 2,432
Default Re: EF V-8 guy needs 4 cyl help

It sounds like you have a Lincoln SA200 welder.If they don't get a lot of use the fuel systems plug up easily.They are gravity feed,so it doesn't take much to plug them.First,the outlet out of the tank plugs easily,then the screen in the top of the bowl.Some had a finger screen sticking up in the tank so you have to take the bowl assembly off to check it.Where the line runs horizontally the fuel will lay in there and turn to gum too.Then the carb itself gums up.When it does there is no other option than to take it off and clean it.No spraying it,or clapping your hand over it when running,it HAS to come apart to get all the passages reamed out.There is no fuel pump to help push the mung through,or pull it through.I took the line off mine and thought I had a good stream coming through it,but it was nothing compared to what it was like after I removed and cleaned everything.Then again,when the points in the mag get dirty or corroded the engine will idle all day,but will fall flat when you ask it to do something.
Keith True is online now   Reply With Quote
Old 03-05-2012, 09:40 AM   #5
Kurt in NJ
Senior Member
 
Kurt in NJ's Avatar
 
Join Date: May 2010
Location: on the Littlefield
Posts: 5,171
Default Re: EF V-8 guy needs 4 cyl help

If it runs on a lot of choke try opening the main fuel adjustment on the bottom --
Kurt in NJ is offline   Reply With Quote
Old 03-05-2012, 08:55 PM   #6
tintoptexan
Member
 
tintoptexan's Avatar
 
Join Date: May 2010
Location: Granbury, Texas
Posts: 63
Default Re: EF V-8 guy needs 4 cyl help

Thanks guys for all the comments. They were very helpful. It was definately a lack of fuel issue. It's a little better now thay I cleaned the high speed idle circut of the carb and cleaned the thank out. Thanks again. Joe
__________________
Joe.
tintoptexan is offline   Reply With Quote
Reply

Thread Tools
Display Modes

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 Off

Forum Jump

Sponsored Links (Register now to hide all advertisements)


All times are GMT -5. The time now is 09:07 AM.