Is this a Carter YFA?
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Tuned
Joined: May 2009
Posts: 300
Likes: 5
From: Apex, NC
Is this a Carter YFA?
This came off of an '80 F150 300 w/ Duraspark II. It has stamping of 7287S and a casting to the right of the fuel inlet of 2433. What is the purpose of the linkage on opposite side of the choke? It moves with the throttle shaft and has some sort of dashpot on this side also. Can anyone ID this thing for me? What does this forked arm actuate?
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
The linkage coming out of the back of the choke housing is the fast idle linkage. The forked linkage is the bowl vent as AB described.
I've never understood the difference between a YF and a YFA. The terms are often used interchangeably, although that's not correct. It is my understanding that a YFA supersedes a YF, but I'm not sure of the differences between the two. Nonetheless, one of those numbers stamped into the carburetor body should be the number to cross reference for a rebuild kit (I can't remember which).
I've never understood the difference between a YF and a YFA. The terms are often used interchangeably, although that's not correct. It is my understanding that a YFA supersedes a YF, but I'm not sure of the differences between the two. Nonetheless, one of those numbers stamped into the carburetor body should be the number to cross reference for a rebuild kit (I can't remember which).
Moderator
Joined: Dec 2007
Posts: 7,987
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From: Boise, Idaho
When I rebuild mine, I got the kit from Napa or Schucks. Nothing really special.
I don't think my particular number was listed either (I have 4 of those 1bbls in my garage and they're ALL different, I can't imagine them listing every single one). Pick a kit with whichever has the closest number. They're all very similar as long as they're close in year. I think there was a big change in them around 77.
I don't think my particular number was listed either (I have 4 of those 1bbls in my garage and they're ALL different, I can't imagine them listing every single one). Pick a kit with whichever has the closest number. They're all very similar as long as they're close in year. I think there was a big change in them around 77.
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Tuned
Joined: May 2009
Posts: 300
Likes: 5
From: Apex, NC
Two more questions if you don't mind. What is the hole above and to the right of the forked arm and on the (dashpot ?) it looks like a vacuum fitting, what does it connect to?
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Lead Driver
Joined: Jul 2009
Posts: 6,477
Likes: 19
From: Sheffield, AL
The "big hole" is the fuel bowl vent. It should have a nipple and be attached to the charcoal cannister via a large vacuum hose.
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