Carter YF fast idle?

[Old Ford Blue]

Hey guys first post here, and let me start off by saying that this is an Awesome group yall have got goin here!

Now for the ride in question. Its a 64 Ranchero with a 69-70 200, with a ford-o-matic. The old girl is in really nice shape and has nearly 435k (yeah thousand) miles on it. The 200 only has about 385k on it, since it was replaced by the dealer in mid 70(originally a 170-never ran right).
Anyhow, it still runs excellent and the tranny shifts smooth and right on time.

Now for the question about the ride in question(if that makes any sense).

(Carb #1)I just rebuilt the Carter YF that was on it(had a toasted accl pump), well when I put it back on it worked perfectly, except that unless you babied it to get it off idle it would stumble, not terribly, but you couldn't punch it. So I pulled the top plate off and noticed that I couldn't get the accl pump check ball out of its hole, well theres the problem.
I still can't get the ball out.(ideas welcome here)

(Carb #2)I also had another old YF laying around, so I cleaned it up and threw a kit at it, bolted it on and now everything is working great except the fast idle.
This carb will not fast idle, the other one worked fine, but I can't see anything to make the YF have a fast idle?
What makes it happen?

Carb #2 had some sort of solonoid attached to it that I remover since the other carb didn't have it and Randy has no wire for it.


Thanks in advance for any help yall can give me.

Gabe

 

[mustang6]

On carb #1, if you can't get the check ball to pull out with a magnet, then it is stuck to the point that it will not allow the accelerator pump to properly fill and seal (which would explain the stumbling/weak pump shot). I would take the carb back off and first try and blow the ball out from the opposite side with compressed air (cover the ball side up with a rag or you'll never see it again if it shoots out!). If that didn't work maybe a thin stiff wire could be wedged through the accelerator pump passage to try and push it out. I have never seen a check ball get that stuck, did the carb sit for a long time to the point that some crud built up on it? Even in crusty carbs I usually find the check balls to be shiny and break loose easily.

On carb #2, it's possible the fast idle was controlled electrically with the solenoid. If you compare the linkage on both carbs, do you see a fast idle cam on carb #1 that you don't see on carb #2? I 'd have to look through my old carb box, but I believe the YFs did have a fast idle cam hooked in with the choke.

 

[Old Ford Blue]

On Carb #1, I tried pulling the ball with a magnet, but I'm gonna try a stronger magnet cause the one I tried was somewhat small.
The wire trick might work....
When I firrst pulled the carb apart the ball popped out and was gone forever, however the rebuild kits come with two new ones, so I have a total of three extras now.

On the fast idle issue, I compared the linkeages of both carbs and neither had any sort of cam. When carb #1 was on there, it worked perfectly, it even sounded like it was FI'd the way it would slowly idle down when you first fired it up, and you couldn't kick it off.
I went so far as to swap the top plates(including the chokes) and that didn't solve it. So I figure whatever controls it must be in the lower carb.

If I were to use the solonoid how would it be wired?


Thanks again,
Gabe

 

[Old Ford Blue]

Is anybody running the fast idle solenoid? If so how does it know when to stop sending power to make the fast idle come off?
Since this motor is in a 64 there is no wire for it......

 

[CoupeBoy]

I'd suspect that on the vehicle that the carb came off of there would have been a thermal switch on the thermostat housing that when warm would cut the power to the solenoid. If I were to use one, I think that I'd just wire it to a normal switch on/under the dash, that way I could have 'high idle' whenever I wanted it. Might even work as a 'poor mans' cruise control if the desired highway speed was right.

-ron

 

[Old Ford Blue]

Now thats not a bad idea. I'll have to check the solenoid to make sure it still works, but I like it.

Also thanks for the tip on the thermal switch, I was curious to know how they did that.

I'll let yall know how it works out.

(I still wonder what makes the other carb have a fast idle....)