Fuel System Quiz

What is the first safety rule to follow when working on the fuel system?

• Never wear safety glasses

• Keep open flames and sparks away

• Smoke while working

• Wear gloves

What are the two types of fuel systems used on Honda and Acura vehicles?

• Return type and pressure type

• Return type and returnless type

• Pressure type and returnless type

• Return type and gravity type

Where is the pressure regulator located in a return type fuel system?

• In the fuel filter

• In the fuel pump

• On the fuel rail

• In the fuel tank

What is the purpose of the fuel pump's relief valve?

• To prevent pressure in the fuel rail from flowing back into the tank

• To control the fuel temperature

• To increase fuel pressure

• To regulate the fuel flow

What is the function of the fuel injector?

• To regulate fuel pressure

• To absorb pressure pulses

• To spray atomized fuel into the intake port of the cylinder

• To control the fuel pump speed

How does the ECM PCM control the fuel injectors?

• By activating the fuel pump relay

• By regulating the pressure regulator

• By providing power and ground to operate the injectors

• By varying the fuel pump speed

What is the purpose of the fuel pump resistor in older vehicle models?

• To regulate the fuel flow

• To control the fuel pump speed

• To operate the injectors on reduced voltage

• To absorb pressure pulses

How can you test the fuel injectors when diagnosing a no start or misfire condition?

• By manually turning on the fuel pump with a scan tool

• By checking the resistance between the injector resistor terminals

• By listening for a clicking sound with an automotive stethoscope

• By observing the fuel pressure gauge

What should you hear when you first turn the ignition switch on without starting the engine?

• The fuel pump running continuously

• The fuel pump turning off after 2 seconds

• The fuel injectors opening and closing

• The fuel pump resistor activating

What is the purpose of the fuel pump's relief valve?

• To increase fuel pressure

• To prevent pressure in the fuel rail from flowing back into the tank

• To regulate the fuel flow

• To control the fuel temperature