Popular Hot Rodding Magazine Homepage Popular Hot Rodding

How Carburetors Work

Prev Next
In lieu of a power valve, Carter-type carbs use tapered metering rods that are attached to spring-loaded pistons for each primary venturi. They move up and down in concert with manifold vacuum, and varying spring rates and rod diameters alter the air/fuel ratio. The piston assembly is easily accessible by removing its retaining plate on the air horn.
How Carburetors Work - Carbin' It Easy

 In lieu of a power valve, Carter-type carbs use tapered metering rods that are attached to spring-loaded pistons for each primary venturi. They move up and down in concert with manifold vacuum, and varying spring rates and rod diameters alter the air/fuel ratio. The piston assembly is easily accessible by removing its retaining plate on the air horn.  View Related Article

 

Get Adobe Flash player

Car Research Guide