Q-jet overhaul

Rochester Quadrajet parts description and overhaul discussion

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Decoding a Rochester Quadrajet part 1: The name
Rochester Quadrajets tend to mystify people because of the various model names assigned to them by GM. Add to that a redesign in the '70s and the confusion only grows. In this video we'll learn the different model names and also how to differentiate between early and later-model Qjets. Enjoy!





Detailed Quadrajet Carburetor Rebuild COMPLETE GUIDE
The most detailed and most popular Quadrajet rebuild video on YouTube will take the fear out of rebuilding your Qjet! After watching my highly detailed video you will be able to rebuild your quadrajet carburetor and get your vehicle running great and back on the road where it should be! The quadrajet rebuilt in this video is of the 1979 era. Some quadrajet carburetor designs vary from year to year however the process will be similar. Electronic Quadrajets from 1980-1990 might need specialized tools to set the MC Solenoid if needed otherwise the rebuild procedure is similar as well. How to replace the Throttle Position Sensor for 1980-1990 Quadrajet and Dualjet carbs: https://www.youtube.com/watch?v=jGEWxVGzdC8 → Subscribe to Classic Gbody Garage: http://www.youtube.com/c/classicgbodygarage?sub_confirmation=1 Classic Gbody Garage Social Media pages: → Join the Classic Gbody Garage Facebook group: https://www.facebook.com/groups/classicgbodygarage/ → Follow Classic Gbody Garage on Instagram: https://www.instagram.com/classicgbodygarage/ → Classic Gbody Garage Channel Home Page: https://www.youtube.com/classicgbodygarage





How to measure and adjust Quadrajet float level
I have had several requests for this, so here you go: 1. The airhorn has to be removed to do this, but the carburetor does not have to be removed from the engine. 2. Some data says to measure from the toe(end that is opposite from the hinge), some say 5/16 inward from the end, etc. I suggest following the specs for your particular carburetor. 3. With the float in the raised position and the inlet needle lightly seated, measure from the top of the float to the top edge of the carburetor with NO gasket in place. If you have to adjust the float, bend at the area that has the cutouts, 4, If you are experiencing flooding issues then it is an excellent time to install a new needle/seat and float and that should cure flooding problems that are not choke-related.





re-jet your Quadrajet (part 2)
rejetting a Quadrajet




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