The Ford Barn - View Single Post - 57 T bird Holley 1273-2S idle problems

scicala · 12-06-2020, 07:00 PM

I've been doing all USA carbs since '67, and mainly 50's Ford products. I know you have checked for a vacuum leak, but it does sound like it may be that. Also posable there is something wrong in the idle circuit.
I assume you have tried to adjust the idle mixture screws on the front metering body to make a richer idle.
Have you disconnected all vacuum lines from the engine and plugged them ? Like to the power brakes or vacuum assist wipers to help eliminate a vacuum leak as a possibility.
Other than that, all I can suggest is to take the carb apart again , and recheck everything in the idle circuit.
If you think it's for sure a carb issue and you can't figure it out, I would be glad to look at the carb for just the shipping cost back and forth. I live north of Detroit in Shelby Township. I see you're in Grand Rapids.

Sal (586) 612-1650 [email protected]

12-06-2020, 07:00 PM	#2
scicala Senior Member Join Date: Jun 2010 Location: Detroit suburb, MI Posts: 3,706	Re: 57 T bird Holley 1273-2S idle problems I've been doing all USA carbs since '67, and mainly 50's Ford products. I know you have checked for a vacuum leak, but it does sound like it may be that. Also posable there is something wrong in the idle circuit. I assume you have tried to adjust the idle mixture screws on the front metering body to make a richer idle. Have you disconnected all vacuum lines from the engine and plugged them ? Like to the power brakes or vacuum assist wipers to help eliminate a vacuum leak as a possibility. Other than that, all I can suggest is to take the carb apart again , and recheck everything in the idle circuit. If you think it's for sure a carb issue and you can't figure it out, I would be glad to look at the carb for just the shipping cost back and forth. I live north of Detroit in Shelby Township. I see you're in Grand Rapids. Sal (586) 612-1650 [email protected]