My flathead had a custom accelerator spring configuration. This consisted of the spring being hooked on to another, larger spring, which was zip tied to the plug wire loom/bracket.

I replaced the spring, and the linkage rod (old one was bent) last night. I'm not sure where the spring it supposed to be hooked up. I hooked it into a hole on the back of the carb, just behind where the vacuum for the distributor connects.


Now, when I hit the gas, the accelerator doesn't return where it used to. I reached under the hood and pushed the linkage forward. When I did that, the engine began to idle lower than I've ever noticed before. After messing with it a little more, I'm thinking that maybe the carb is sticking open, and thats why PO did the custom spring setup.

Thoughts? Suggestions?

 

FWIW, I'm having the same problem. In my case, it seems as though it is actually the accelerator pump in the carb that is sticking and preventing everything from returning to the idle stop position. Having this problem with both an original Ford script carb that I rehab'd and a brand new one I just got from Dennis Carpenter.

Keep me posted on any solutions.

 

JP, i'm looking at your pic and i see NO extension of the spring. u need to find a better location a little forward of where it's at now.. spring being in a relaxed point or very close to it, ain't gonna work.

 

My spring is hooked around the heater hose connector on the right side head, I saw it there in a picture somewhere. (When I got the truck, it was actually hooked on the choke cable bracket, but it would bind there.

But the REAL QUESTION IS, where did you get that new accelerator rod? There are several of us that have been looking for them.

 

I agree. Mine is way more stretched than that.

 

There is a hole in the choke cable plate, that is where it goes. I can't see the carb end of the OP's spring but it appears to be in about the right spot. I believe the correct installation tho is to put the coiled end at the carb, so it won't foul the linkage.

Usually when there is a problem returning to idle it's because of a worn throttle shaft.

 

The picture is blurry, but spring isn't fully contracted. Maybe close. I tried a different spot, and it seems to work a little better, so I'm thinking of putting it back where I had it and just bending the end to make it shorter.

Thanks

 

It's probably not the right part, but this is the one I bought:

Ford - Ford Accelerator To Carburetor Rod - 10.75 - Ford Deluxe | 91A-9747 - Macs Auto Parts

 

That is where I had it hooked up. Shortly after posting this, I realized I probably needed to reverse the spring. I did that last night.

While messing with it last night, I noticed that the carb has a small fuel leak. It's probably time to rebuild it.

Thanks,

 

Yea, that a bit short at 10.75", the book calls for 11.69"

 

That's interesting. MidWest has the 10.75" rod in their Pickup parts catalog, so I just assumed it was the correct length.

 

Yea, midwest list it as a 91A9747, the same as Mac's which like the hot rod sites I have found list it for the 32-48 flatheads. I have a homemade one that somebody made out of a piece of copper tubing, I'll have to measure it. I was going on the parts list which as you can see calls for 11.69"