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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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In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?()
A . noise coming from that air starting valve
B . continuous operation of the starting air compressor
C . zero air pressure in the air starting system
D . overheated starting air pipe to the cylinder head
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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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Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in ()
A . an air bound fuel system
B . damage to cylinder heads and pistons
C . excessive fuel injection
D . excessive air valve lift
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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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If a four-stroke/cycle diesel engine is started by injecting air into the cylinder, the pistons receiving the charge of starting air must be()
A . on the power stroke
B . on the exhaust stroke
C . at the end of the power stroke
D . at the start of the intake stroke
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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 reciprocating, steam-driven pump that has been idle for a period of time, you should ().
A . open the steam line mot valve
B . drain the steam cylinder
C . close the steam cylinder drains
D . open the liquid cylinder drai
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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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A diesel engine cranks properly during starting but immediately stallsWhich of the following systems is most likely at fault?()
A . Hydraulic starting
B . Electric starting
C . Ignition
D . Fuel
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Which of the listed items should be secured before performing any maintenance on a solenoid operated air start valve?()
A . Electric power and starting air
B . Lube oil standby pump and control air
C . Hydraulic switch and engage jacking gear
D . Motor drain and pneumatic control system power
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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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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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In the starting process of a diesel engine, the main object is to attain the compression conditions sufficient to ()
A . turn the flywheel
B . reduce friction
C . overcome inertia
D . ignite the fuel
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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 diesel engine must be started before it can run by it self For this purpose () has to be used.
A . a starting system
B . the starting air
C . a starting operation
D . A, B and C
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With respect to diesel fuel, the ease with which a cold engine will start is dependent upon the()
A . ignition quality of the fuel
B . high heating value of the fuel
C . amount of carbon residue after combustion
D . internal flow resistance in the injector
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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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Before you start an engine in a compartment,it’s MOST important to().
A . check the flame arrester
B . check the fuel tank
C . check the battery
D . ventilate the bilge
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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
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Before starting a production run, it's not necessary to perform a trial run.
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In the Elizabethan Age, a yellow flag would be raised for a tragedy in the theatre before the performance started.
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Before being shut down, a diesel engine should idle a few minutes in order to _.
A.prevent governor surging at shutdown
B.make sure the fuel nozzles are flushed clean
C.prevent pressure buildup in the fuel lines
D.prevent damage from localized overheating