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A diesel engine fails to start because of water in the fuelIn order to start the engine, you should （）?
A . turn engine with jacking gear
B . drain filters and strainers and bleed off water at each injection pump
C . use ether to start the engine with blow-down valves open
D . blow through the cylinders and fuel lines with a drying agent
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If the diesel engine fuel injection timing is changed to delay the start of injection until the pistons are at top dead center, the engine will（）
A . backfire through the air intakes
B . develop less power under load
C . have high firing pressures
D . lift its cylinder relief valve
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An auxiliary diesel engine may fail to start due to（）
A . low exhaust back pressure
B . high lube oil temperature
C . insufficient cranking speed
D . excessive fuel atomizatio
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If a diesel engine fails to start，one of the likely causes is （）
A . low compression temperature
B . low ambient air pressure
C . high lube oil pump pressure
D . high fuel oil booster pump pressure
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A diesel engine may fail to start due to （）
A . low air charge temperature
B . high cranking speed
C . excessive fuel dilution of lube oil
D . high compression pressure
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A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine（）
A . has little or no internal friction
B . has a lower effective compression ratio
C . operates with scavenge air under a positive pressure
D . operates without energy absorbing intake and exhaust stroke
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Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A . open the bypass line
B . cut in the lube oil cooler
C . pressurize the lube oil system
D . top off the expansion tank
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Diesel engines are started by supplying （） into the cylinders in the appropriate sequence for the required direction.
A . fuel oil
B . diesel oil
C . compressed air
D . jacket water
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the（）
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）
A . an obstruction in an cylinder
B . water accumulation in some engine cylinders
C . low starting air pressure
D . low scavenge air pressure
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A diesel engine may be hard to start if the （）
A . air intake is restricted
B . engine is cranked too fast
C . vibration dampener is faulty
D . exhaust back pressure is low
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Immediately after any diesel engine is started, the engineer should check the （）
A . crankcase pressure
B . lube oil pressure
C . saltwater pressure
D . exhaust temperature
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Cold weather starting of a diesel engine may be made easier by（）
A . decreasing the compression ratio
B . using a special fuel having a high ignition temperature
C . increasing the starting air supply
D . heating the jacket water
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What preventative maintenance should be done frequently to diesel engine starting air receivers?（）
A . Drain the accumulated moisture
B . Test the relief valves
C . Watch the temperature to prevent fluctuations in pressure
D . Clean the interior to remove oil and foreign matter
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Diesel engine electric starting motors generally require heavier duty motors and motors and operate at higher voltages than comparable starting motors for gasoline engines due to（）
A . higher speed required
B . flywheel-effect
C . lower starting temperatures
D . higher compression pressure
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The following preparations are essential for any （） of marine diesel engine before it may be started.
A . doing
B . make
C . turn
D . operating
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Diesel engine starting difficulties due to cold intake air temperatures, can be overcome by using a/an（）
A . increase in starting air pressure
B . increase in lube oil viscosity
C . compression expansion device
D . jacket water heater
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The timing of diesel engine air starting valves is controlled by（）
A . the air start valve timing gears and rods
B . a cylinder check valve
C . individual cams and valve gear
D . an air manifold poppet valve
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Diesel engine air start system check valves are opened by （）
A . an air start cam
B . cylinder compression pressure
C . starting air pressure
D . valve spring
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If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
A . compression pressures are below normal
B . lube oil is diluted with fuel oil
C . cranking speed is too low
D . exhaust system is partially restricted
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Before starting a diesel engine, you should always（）
A . check the pyrometer readings
B . check the crankcase oil level
C . check the fuel oil strainers
D . clean the fuel system
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The main purpose of starting the diesel engine on air briefly is（）
A . to inspect if the cylinder has the water leakage
B . to expel out the residual water/gas/oil from the cylinder
C . to check if fuel supply is normal
D . A and B
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Diesel engine air start valve timing is controlled by（）
A . engine operating speed
B . an air manifold
C . a hydraulic distributor
D . individual cams and valve gear
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Which of the following should always be checked prior to starting a diesel engine?（）
A . Air filters
B . Fuel oil strainers
C . Crank case oil level
D . Pyrometer reading
