How to Adjust Air/Fuel Mixture 68 Carb?

[Cathy S.]

Just got my Quadrajet rebuilt. Adjustment procedure?

[Terry M.]

Re: How to Adjust Air/Fuel Mixture 68 Carb?

Just got my Quadrajet rebuilt. Adjustment procedure?

There is a step-by-step in the Chevrolet Chassis Service Manual. That and the Chevrolet Ov erhaul Manual are good books to have if one is going to work on their car.

https://www.ncrs.org/shop/index.php?main_page=product_info&cPath=1_68&products_id=249

[Joe L.]

Re: How to Adjust Air/Fuel Mixture 68 Carb?

Just got my Quadrajet rebuilt. Adjustment procedure?

Cathy------


If it's a quality rebuild, most of the adjustments should have been done by the rebuilder. You will probably have to finish-adjust idle mixture and idle speed, though. Follow the procedure found on your car's emissions label (driver side firewall).

By the way, I've installed new Q-Jets and had them run PERFECTLY out of the box with absolutely no adjustments, at all.

[Cathy S.]

Re: How to Adjust Air/Fuel Mixture 68 Carb?

I have the service manual and have read it. I was hoping for some pointers?

[Cathy S.]

Re: How to Adjust Air/Fuel Mixture 68 Carb?

Cathy------


If it's a quality rebuild, most of the adjustments should have been done by the rebuilder. You will probably have to finish-adjust idle mixture and idle speed, though. Follow the procedure found on your car's emissions label (driver side firewall).

By the way, I've installed new Q-Jets and had them run PERFECTLY out of the box with absolutely no adjustments, at all.

Thank you Joe!