Primers are used on engines with carburetors?

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Multiple Choice

Primers are used on engines with carburetors?

Explanation:
Primers are used to aid starting in carbureted engines by delivering a measured amount of fuel into the induction system so the cylinders have a combustible mixture before the crankshaft turns. In a typical aircraft carbureted system, the primer draws fuel from the tank and injects it directly into the intake manifold or cylinders, enriching the mixture to make starting easier, especially after the engine has stood for a while or in cold conditions. This starting aid does not exist on engines without carburetors (fuel-injected engines), which rely on other starting methods rather than a dedicated primer circuit. So primers are used on engines with carburetors.

Primers are used to aid starting in carbureted engines by delivering a measured amount of fuel into the induction system so the cylinders have a combustible mixture before the crankshaft turns. In a typical aircraft carbureted system, the primer draws fuel from the tank and injects it directly into the intake manifold or cylinders, enriching the mixture to make starting easier, especially after the engine has stood for a while or in cold conditions. This starting aid does not exist on engines without carburetors (fuel-injected engines), which rely on other starting methods rather than a dedicated primer circuit. So primers are used on engines with carburetors.

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