Carburetor Tuning Basics - Night School
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Here is the primary power piston assembly for a Quadrajet. Use care installing the retaining spring (top) and metering rods. Rod tapers are precisely matched for each engine design. Today, rods are nearly impossible to find through parts sources. Clean parts without removing brass material. Do not stretch the balance spring (bottom). This spring is factory calibrated to counterbalance manifold vacuum. View Related Article
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