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,.

Weba common problem with quadrajets is a misadjusted choke spring.

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

It runs well now but is still giving us.

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

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

Install the thermostat with a.

If the idle circuits are exposed it will make it.

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

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.

Webone book says to turn therm.

For those not familiar.

Cover counterclockwise to the 2nr mark.

Webi put the carb back on the truck.

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

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

There were several issues so he went completely through it.

Adjusting this type of thermostat.

Webcouple things to look at.

If you already removed it, turn it in until.

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

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

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

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

If iโ€™m not mistaken, the choke.

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And got the idle properly set.

Another book says to turn.

The same procedure should work on most quadrajets no matter.

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.

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

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

The car struggled with cold starts.

These adjustments alone can keep you.

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

Got the idle mixture set using a vacuum gauge.