Just completed a top to bottom rebuild on a 1959 "292', and have a big hesitation on accelerating - have a Autolite 2100 , timeing is set at 10 degrees BTDC - starts great and  idles good - Acc.pump is working - advance seems to be working - is this carb just to small, I don't have any idea the jet sizes , Any help would be appreciated - Neil

You say the accelerator pump is OK. Before you start taking the carb apart, try bumping your initial timing up to 15-16 degrees or so, and see where that brings you.

Have you id'd the carb? They were used on a lot of engines. If it's not for the 292, it may not even be set up close to right to work well without tuning.


Lawrenceville, GA

Greetings to all: Make sure the acc. linkage on the carburetor is ready to start displacing the pump diaphragm the INSTANT the throttle shaft starts to move. The jets should also follow with an instant, healthy squirt. I have found the kits of today are not compatible with the mid 50's to early 60's Ford 2 barrel carbs.. In order to use the "flatter" pump diaphragm supplied in most kits, I have had to change the front end of the 50's - 60's carbs.to that of the 70's carbs.. Also, make sure the throttle shaft is still positively crimped/staked (JB weld works well here) to the throttle lever. Any play here may also cause a slight delay with the pump diaphragm. Hope this helps, JEFF..........

64F100 57FAIRLANE500

Shot in the dark here, but just another thing to check. The older Ford carbs had a check ball in the accelerator pump circuit behind the pump diaphragm in the front of the carb. Occasionally they would get a flat spot in them and cause a hesitation. They eliminated that check ball when they went to the neoprene one in the later carb.

Dan      Kingman Az.      86409

Another idea: making only one change at a time helps isolate the variables involved...of which there are many.

How long has it been sitting?  Maybe the gas is rotten.

John - "The Hoosier Hurricane"

Neil, good to see you're still kickin, did you check vaccuum at idle, any little thing affects these older carbs. Gary

       

Gary, 55 Vicky, St. Germain, Wisconsin

 

I just goin through the same problem. Do you have the proper base gaskets? Possible vacuum leaks. And also the vacuum port to the choke chamber. And the correct location for the vacuum advance hook up. Ie. ported or manifold vacuum. I also put on a Holley 2300 which seems to run better than the autolite.

Thanks for the thoughts -the carb came off either a 272 or 292 -McCraney suggested " ID ing the Carb? What do you mean ? - will try the timeing change first - Forddearborn - mentioned changing the front end ( I assume the excelerator pump housing, can they be purchased separately ? The carb was rebuilt and has a new check ball - gas is new and mid range - Gary idle is about 21 psi at idle - thanks for the idea's - Neil