, MARINE TECH QUIZ BASED YAMAHA
MARINE FUEL SYSTEMS MULTIPLE
CHOICE QUESTIONS WITH CORRECT
ANSWERS GRADED A+ SURE PASS
2026
Yamaha Marine Fuel Systems Certification Practice Exam
Multiple Choice Questions (Choose the BEST answer.)
1. What is the primary function of the fuel injection pump?
A. Draw fuel from the fuel tank
B. Filter contaminants from fuel
C. Return excess fuel to the tank
D. Pump fuel to the fuel injectors at high pressure
2. What is the primary function of the fuel pump?
A. Increase fuel pressure for injectors
B. Filter fuel before injection
C. Remove water from fuel
D. Deliver fuel from the fuel tank to the engine
3. Why doesn't the pickup tube extend all the way to the bottom of the fuel tank?
A. To reduce fuel pressure
B. To improve fuel economy
C. To allow air into the tank
D. To avoid drawing contaminants that settle at the bottom
4. What is considered the worst fuel contaminant?
MARINE FUEL SYSTEMS MULTIPLE
CHOICE QUESTIONS WITH CORRECT
ANSWERS GRADED A+ SURE PASS
2026
Yamaha Marine Fuel Systems Certification Practice Exam
Multiple Choice Questions (Choose the BEST answer.)
1. What is the primary function of the fuel injection pump?
A. Draw fuel from the fuel tank
B. Filter contaminants from fuel
C. Return excess fuel to the tank
D. Pump fuel to the fuel injectors at high pressure
2. What is the primary function of the fuel pump?
A. Increase fuel pressure for injectors
B. Filter fuel before injection
C. Remove water from fuel
D. Deliver fuel from the fuel tank to the engine
3. Why doesn't the pickup tube extend all the way to the bottom of the fuel tank?
A. To reduce fuel pressure
B. To improve fuel economy
C. To allow air into the tank
D. To avoid drawing contaminants that settle at the bottom
4. What is considered the worst fuel contaminant?
