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How Carburetors Work

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All Q-jets feature mechanically actuated secondaries. Like the Carter AVS, an air valve covers the secondary bores and gradually opens as air speed increases. The rate at which the valve opens can be adjusted by changing the spring tension.
How Carburetors Work - Carbin' It Easy

 All Q-jets feature mechanically actuated secondaries. Like the Carter AVS, an air valve covers the secondary bores and gradually opens as air speed increases. The rate at which the valve opens can be adjusted by changing the spring tension.  View Related Article

 

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