1. Engine Maintenance Chapter 5 - Quiz

2. Engine Maintenance 1.The most common source of problems on a diesel engine is the __________ system. a.cooling b.fuel c.ignition d.electrical 2

3. Engine Maintenance 2.Two common problems associated with diesel fuel are water and: a.evaporation. b.increase in BTUs. c.bacterial growth. d.fuel pressure. 3

4. Engine Maintenance 3.Fuel filters are necessary to prevent: a.vapor lock. b.water condensation. c.excessive fuel pressure. d.foreign matter entering the system. 4

5. Engine Maintenance 4.Diesel fuel systems must be bled to: a.provide room in the system for air and fuel. b.take pressure off the injector nozzles. c.remove dirt and foreign matter from the fuel. d.remove air from the fuel system. 5

6. Engine Maintenance 5.Most marine diesel engines are installed with primary and secondary fuel filters to remove __________ from the fuel system: a.air. b.bacteria. c.corrosion. d.dirt and water. 6

7. Engine Maintenance 6.What happens to the heat that a marine diesel engine produces while running? a.Half of the heat leaves through the exhaust and half leaves through the cooling system. b.All of the heat leaves through the cooling system. c.About one third of the heat is transformed into useful work. d.The heat is used to directly heat the boat in cold weather. 7

8. Engine Maintenance 7.A __________________ is used to maintain engine temperature by controlling the amount of water that passes through the engine block and cylinder heads. a.water pump. b.thermostat. c.seacock. d.heat exchanger. 8

9. Engine Maintenance 8.The two basic types of marine cooling systems are: a.direct and indirect. b.raw water and open. c.raw water and direct. d.indirect and closed. 9

10. Engine Maintenance 9.The oil level in a diesel engine should be checked: a.once a boating season. b.every six months. c.once a month. d.before every engine start. 10

11. Engine Maintenance 10.Engine oil viscosity can be dramatically affected by: a.oil pressure. b.ambient temperature. c.a clogged oil filter. d.contaminated diesel fuel. 11

12. Engine Maintenance 11.Too much oil in the engine's oil pan will cause: a.over revving. b.engine seizing. c.better performance. d.higher engine speed. 12

13. Engine Maintenance 12.When engine trouble occurs the very first rule is to: a.assume the problem is with the ignition system. b.check the obvious. c.call for help. d.make necessary equipment adjustments. 13

14. Engine Maintenance 13.The most common cause of cooling system problems is: a.loss of coolant in the closed cooling system. b.weeds or debris wrapped around the propeller shaft. c.loss of water flow in the raw water circuit. d.failure of the heat exchanger. 14

15. Engine Maintenance 14.When low oil pressure is indicated the best trouble shooting technique is to: a.head for home port. b.immediately add engine oil. c.check the oil pressure gauge for malfunction. d.shut the engine down. 15