If the spring tension is too loose, the choke will open prematurely and the engine will either.

Got the idle mixture set using a vacuum gauge.

Install the thermostat with a.

It runs well now but is still giving us.

Webadjusting the metering rods deeper into the jets leans the mixture, while counterclockwise adjustments richen the setting.

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Weba common problem with quadrajets is a misadjusted choke spring.

Webquadrajet carburetor choke adjustments are the best way to get instant starting, drivability & mpg!

Webin this video, i'll run through the 5 adjustments you can make to the choke system on your electronic rochester quadrajet or dualjet carburetor.

The choke spring can be either integral (a part of the carburetor), such as the design used on the later rochester quadrajet, or divorced (not attached to.

The car struggled with cold starts.

Voltage to the choke , seal between the choke housing and carb body and as discussed choke pull off.

Another book says to turn.

There were several issues so he went completely through it.

And got the idle properly set.

(i assume thats 2 notches from the center on the rich side).

Webhow to tune your c3 corvette's rochester quadrajet carburetor by adjusting the idle mixture screws so your car runs and idles properly.

These adjustments alone can keep you.

After a jet and metering rod change to get our carburetor we spend the afternoon.

For those not familiar.

If iโ€™m not mistaken, the choke.

This adjustment screw is for the โ€˜adjustable part throttleโ€™ and is factory set, leave it alone.

Adjusting this type of thermostat.

The same procedure should work on most quadrajets no matter.

Make sure you have the right gaskets if you used a cross over intake, or heat riser (not sure what the right name is).

Webin this video i demonstrate how to adjust the fast idle on the choke of this rochester quadrajet.

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Webin this video ill show you how to set the mechanical choke on a rochester quadra jet 4 barrel carb, this also applies to the electronic chokes on all rochesters,.

It has been proven you can modify the quadrajet to flow in excess of.

Webthe particular quadrajet uses an integral (mounted on the carburetor), choke thermostat.

If you already removed it, turn it in until.

Webcouple things to look at.

If the idle circuits are exposed it will make it.

Webwe just got our quadrajet back from cliff for our '71 gmc.

Cover counterclockwise to the 2nr mark.

Webone book says to turn therm.

Webi put the carb back on the truck.