Technical Need help with Carb

I have a 55 Buick with a 264 in it. 2 Barrel carb. Got it running but it makes a loud ****ing noise through a black inlet on the side of the carb. These pictures show a carb with something on the end covering up the inlet. Does anyone know what this is? Mine is missing.

Thanks for the help

 

I think that runs you off the map of normal carb problems...it is a switch relating to Buick's rather unusual starter system. For now, the need is to find where things thread into the iron and find a plug that fits the threads.

 

So as long as I plug it there shouldn't be an issue?

Thanks

 

Find hole, look for threads, if you are lucky it will be something easy like 1/8 pipe. It is a vacuum operated switch which now is just a vacuum leak...your vacuum is getting out and roaming around looking for its switch and must be stopped and put back to work in your engine.

 

Thanks

 

As Bruce says! Don't let all the vacuum out. That'd ****.

 

My freinds Packard has a similar solenoid, but not built into the carb... its connected by the linkage. It holds the throttle open just a little bit while cranking to help it start. Pretty cool trick, but obviously not worth the effort since they went away.

 

That is the the gas pedal starter switch. Step on the gas with the key on and the engine cranks and starts. When it starts and makes vacuum, the vacuum pulls up a ball and breaks the starter solenoid circuit. The generator is also involved. If your car starts with just the key someone has byp***ed it, so plugging the hole should work. Maybe use a tapered rubber plug.

 

JB Weld it

 

Now that is a novel idea.........step on the gas to start the engine....who'd ever "thunk" of that!

 

It was fairly complicated...it had to be able to know if the engine was already running and to turn the starter off when the engine caught.

 

Crazy stuff. One word, KISS

 

Actually it was considered pretty simple at the time. Hop in car, turn switch on, floor gas pedal, start car and the vacuum from the intake pulled the ball back to break contact in the start switch. Most of us were good enough at telling that the engine had started that we had already lifted off the gas a bit anyhow.

 

Great Idea

 

The hole covered by the switch is not threaded. The switch is held in place by a U-shaped spring and a single screw. Just rob a switch from an old Buick or Packard carburetor, with the spring and screw.

There is an air p***age underneath. It may be necessary to install the ball and plunger ***embly to stop the vacuum leak underneath.

Jon.

 

Go to your local hardware store and look at their ***ortment of tapered rubber plugs or stoppers. I bet they have a small one that will fit the hole. And if you ever want to put the switch back on, just pull the rubber plug and you are good to go.

 

Decided to go with JB weld. Worked like a champ. Thanks everyone for the help