What does the fuel filter do?

• A. Removes solid contaminants from engine oil
• B. Provides connection between the engine and retract system
• C. Used to deliver fuel from the tank to the ejectors
• D. Removes solid contaminants from fuel

Answer: (D)

Fuel cleanliness matters because tiny particles in fuel can clog small passages and wear fuel injectors. The fuel filter sits in the fuel line and traps solid contaminants so only clean fuel reaches the ejectors. By doing this, it protects the fuel pump and injectors and helps maintain smooth engine operation. It doesn't remove contaminants from engine oil—that's the oil filter's job—nor does it serve as a connection between the engine and retract system, nor does it deliver fuel from the tank to the ejectors (that delivery is the pump’s job).