Information on Adjusting Edelbrock Carburetors

Edelbrock carburators are found in high-performance vehicles such as theses stock cars.

Edelbrock makes engine components for automotive, marine and off-road performance vehicles. Edelbrock carburetors have the distinctive company logos of a red background with "Edelbrock" in silver cursive script.

Location of Adjustment Screws

The adjustment screws are on the front of the carburetor. They are located just below the "Edelbrock" logos stamped on the carburetor.

Adjustment Technique

With the engine running at idle, turn one of the screws clockwise and counterclockwise to find which direction increases idle speed. Turn that screw until it is wide open. Turn the other screw in the opposite direction until it closes.

Setting Idle Speed

Turn the closed screw out for five half turns. Close the other then turn it out five half turns. Ensure they are synchronized. By trial and error, turn each screw in or out a half turn at a time until you the idle speed that sounds the smoothest.

Fun Fact

Most modern cars use fuel injection systems instead of carburetors. Carburetors are found mainly on older, classic and restored cars.

References

• Neptune Spacebears: Adjusting an Edelbrock Carburetor
• Edelbrock Performance: Carburetors & Accessories - Introduction