The Stovebolt Site Forums The Shop Area Engine Shop Rochester Carburator with bailing wire options

Ok, my 1954 Chevy 3600 has starting issues:
1. I have to pour a small amount of gas into the carb throat to get it to start. With it "choked" , it starts and idles fine. Open the choke and it idles fine and revs with a bit of a bog.
2. There's bailing wire tying the choke lever to something that I can't identify and I think a spring is missing.
3. I want to get this carb set up right.
I could sure use some help, instruction, guidance on this, please?
Here's pics:
https://www.dropbox.com/sh/fgj5fc12c1pfeea/AABXkvnq4-hFCLtFrEcu-7FTa?dl=0

Just looking at the photos, they have the choke lever tied to the accelerator lever? I don't see how that works. You probably do have the spring missing that winds around the choke shaft.
Maybe someone can post the exploded view, and maybe a minor rebuild kit is in order?

Yes, I agree. I'll try to take a better pic of the bailing wired area and post it late today. Thanks.

To me it looks like the bailing wire is just there to keep the fast idle tab from falling off the end of the choke shaft. The throttle arm does not appear to be bound to it anywhere.

The fast idle tab is held onto the shaft by a peened/deformed area at the end of the shaft. This can get loose over time, particularly if previous owners have ham-fisted the carb.

Jason

Thanks Jason, hoping someone can help me find a link to a schematic and then some ideas on how to get it back in shape, springs, etc....

Dusty,

I made a quick and dirty diagram for your that will hopefully clarify.
Rochester 1B Throttle & Choke Linkage

I made up my own terms for these parts. They are titled in green.

The two parts that appear to be wired together in your pic are on this diagram as "choke arm" and "fast idle cam".

The way the mechanism is supposed to work is that when the "choke arm" is fully engaged (choke ON), the fast idle cam rotates and bears upon the throttle stop lever. The throttle stop moves clockwise (in this pic) raising the idle speed.

When released the throttle stop plate moves back CCW and returns the idle speed to its normal setting.

The amount of fast idle speed increase is based on the throw of the choke cable (how far pulled) and the profile of the fast idle cam.

Hope this helps.

Jason

It does, thanks! Hey, I updated the photos's and you can see everything better. I failed to mention that fuel seeps out of the throttle shaft. So where do I go about finding the spring(s) needed and is this something a novice should even attempt or do I just break down and try to find a new or reman carb? Its a 7004468 Rochester B carb. I looked at the kit and not sure if it has springs , 7004363 p/n. Suggestions?

Sent a P.M.

Yeah. with the new pics, I can see now it's not tied to the throttle arm, that was just an end of the wire sticking out.
It is just tied to the fast idle cam.

Old GMC Gold - it looks like this is going to be another 54 Truck adventure!

I think my 57 bigbolt has the same carb. on it. The previous owner probably changed it. I think I am supposed to have a Zenith. But it starts and runs perfect with the Rochester. So I aint gonna fix something that is not broken.

I have some model B parts carbs. I might have the parts for that. Sounds like you need an o-haul. The accel pump must not be working & the needle & seat must be leaking gas into the throat.
What part of Mo. are you in?
George

Wrenchbender Ret. - I live near Hannibal in NE Missouri....other side of the state you might say. WetWilly5757 is sending a donor carb with spring and other parts. I'll go get a rebuild kit and give it a try. The previous owner said they rebuilt the carb back in 99 and then it sat for 15 years....with the spring missing and bent kicker arm, I'm thinking maybe not the perfect rebuild and then sitting didn't help, right. Thanks for the offer, its appreciated. I'll surely be back on here with more questions as I get into this deeper. Thanks everyone!