Hey gang,

I have a 64 bbs and the choke pull off is a tiny piston operated by vacuum, not the later diaphragm types. THe thing does not work. I tried lube-ing it to make the vacuum stick, but no luck.
Besides a cable manual choke, any suggestions on how to fix?

THanks

_________________
1962 Valiant V-200
170 C.I. Super Six, HEI, Dutra Duals

The vacuum piston with internal link you describe was used through '63. 1964 was the first year for the external diaphragm-type choke pull off. So, your carburetor is a 1960-'63 item.

What exactly isn't working for you? What problem are you having? This system can be repaired and adjusted, but first we need to know what the trouble is. What do you mean when you say you were trying to make the "vacuum stick"?

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.

THanks for looking, man. The problem is that the choke plate does not open a bit once the engine starts. It just stays is a nearly closed position, and the car wants to stall.
I can adjust the choke to a bit more open position at start, but then it has difficult time starting. I end up having to start car, get out, put something down carb to open it slightly, and then it idles fine. Eventually the spring choke opener will open the plate and I am fine.

I do not wish to go the manual choke route unless I have to.

BTW, I did a rebuild on this, so maybe the float height has something to do with it? The method to check float height (w/ the little guage) seemed sloppy, and am not sure I did it right.

Thanks

what I menat about making vaccuum stick is that there is this tiny piston-like thing near the top of carb, (right by the throat, and within the carb body......it is enclosed behind a little metal cap, so you cant see it). A little actuating arm goes from the piston, through the wall of the carbs throat, and attaches to the choke plate, and pulls the plate open a bit once the engine gets some vacuum. The piston is sucked on by vacuum.

I removed the cap and pulled out this piston, and put some heavy anti sieze lube around it to try to make the vacuum hold, but no luck.

The anti-seize wasn't the way to go; it'll gum up the works. The piston needs to move freely within its cylinder; it can be flushed with carburetor cleaner without removing the metal end plug. Put in a new end plug -- make it the correct-size welsh plug; nothing else will work correctly. Your pull-off probably isn't actually getting vacuum, because somebody has used the wrong gasket(s) at the carb base to manifold, carb base to carb centre casting, and/or carb centre casting to carb top casting. All three of those gaskets must be exactly the right ones, and must be installed right way round and rightside up, or some vacuum passages will be blocked off, including the one that transmits manifold vacuum up to the air horn.

_________________
一期一会
Too many people who were born on third base actually believe they've hit a triple.