Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

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  
Old 12-13-2010, 10:02 PM
Heather_M Heather_M is offline
New User
 
Join Date: May 2010
Location: El Monte, Ca
Posts: 11
Heather_M is starting off with a positive reputation.
Motorcraft carburetor vacuum connections?

I recently installed a new Motorcraft 2 barrel carburetor on my 1972 Ford F-250. It is automatic, with the 360 engine.

The old carb had a manual choke, the new one (I'm guessing?) is electric, as it has no linkage for the choke cable.

I've never done a carb before, so this is all new for me. I put the new one on exactly the way the old one was. There are a few things I suspect weren't correct on the old one, though...it had only one small vacuum hose, running from the distributor to a connection on the passenger side of the carb, below the choke.

I see a place on the new choke that looks like it should have a hose connected to it, and there are two connections on the back of the carb, that seem to be for hoses but nothing was hooked up to any of them on the old carb.

This picture shows a loose vacuum hose that is plugged with a screw, I'm wondering if this is supposed to hook somewhere to the carb or the choke?

Click the image to open in full size.

The truck starts up fine, but once the engine warms up, it will repeatedly die at idle--once it cools down, good again for a little while, then same thing, just won't stay running unless I have the pedal almost to the floor. So I've obviously got something on it wrong or disconnected.

I did not turn any of the 3 adjustment screws, I put it on the way it came out of the box.

Here are a few pictures of the old carb, and the new one, not the best pics but might help. I can get better pictures tomorrow if you need to see something specific, just let me know what to photograph.

Click the image to open in full size.

Click the image to open in full size.



Thanks!


.
Reply With Quote
  #2  
Old 12-14-2010, 05:12 PM
Able Dog Able Dog is offline
New User
 
Join Date: Dec 2010
Posts: 7
Able Dog is starting off with a positive reputation.
That round plastic cover on the side of the carb is the choke and if memory serves me right, it was set on two rich. From your pics it looks like the previous owner disabled it and added a manual choke.
Try hooking that loose vacuum line to the line on the side of the carb near the choke.
As for the two ports in the back of the new carb, I only remember one and it was blocked off with a rubber cap.
Good luck.
Reply With Quote
Old 12-14-2010, 05:12 PM
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1967 - 1972 F-100 & Larger F-Series Trucks

Tags
1979, 83, carburetor, carbvacuum, choke, f150, ford, hook, hoses, instruction, manual, motorcraft, national, tubing, vacuum

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 10:50 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. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup