How to Adjust the Fuel Level on a Holley?

Answer Holley carburetors have adjustable floats in the float bowls and a window on the side of the float bowl to monitor the level. Holley carburetors are highly susceptible to flooding if sediment is in... Read More »

Top Q&A For: How to Adjust the Fuel Level on a Holley

How do I Adjust a Holley Carb 41504160 Float Level?

The float level on a 41504160 carburetor works like any other Holley carburetor by holding fuel within the carburetor and serving that fuel to the metering blocks. When the fuel level dips too low,... Read More »

How to Adjust the Fuel Pressure on a BBC Holley 750?

A Holley 750 carburetor for a big block Chevrolet engine is set to operate at between 5 and 7 lbs. of fuel pressure in the system. The Holley carburetor is set up to run at this pressure throughout... Read More »

How to Adjust the Air/Fuel Mixture for a Holley?

The air/fuel adjustment on a Holley carburetor is on the metering block. All Holley carburetors have one or two metering blocks that provide metered fuel flow to the throttle bores, where the fuel ... Read More »

How to Adjust the Fuel Volume on a Holley Carburetor?

The fuel volume on a Holley carburetor is controlled by the fuel bowl. Fuel is pumped into the fuel bowl from the vehicle's fuel pump as the pump senses the vacuum draw from the carburetor. Once th... Read More »