Holley Carburetor Problem-Solving
Generally an engine will pop, miss or surge if it's lean, although an excessively rich condition can cause the same problems. As a rule, cool, dense air requires larger jets, while hot thin air requires smaller jets. Also, whenever a carburetor spacer is added or removed, a camshaft, cylinder head or intake manifold change is made; it will be necessary to retune the carburetor to regain maximum performance.

 

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