MOTOR – MAINTENANCE

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MOTOR - MAINTENANCE

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Category: MOTOR - OPERATION

The amount of fuel delivered by a helical plunger type fuel injection pump is controlled by _____________.

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Early injection timing is indicated by ____________.

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The highest pressure in a diesel engine cylinder normally occurs _____________.

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If a single cylinder relief valve on a diesel engine lifts frequently while the engine is running, the cause may be an _____________.

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Late fuel injection in a diesel engine is indicated by low firing pressure with _____________.

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Air in the fuel lines of a diesel engine can cause _____________.

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Excessive diesel engine back pressure may be an indication of __________.

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Dirt in a fuel oil system of a diesel engine can cause _____________.

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Loss of lubricating oil pressure to the main propulsion diesel engine will actuate a/an _____________.

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After starting a diesel engine, which of the listed operating conditions should be checked FIRST?

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Diesel engine cylinder head test cocks are used to ________.

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High cylinder firing pressure, accompanied by low exhaust temperature, can result from _____________.

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High firing pressures and a low exhaust temperature in a diesel engine may result from _____________.

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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 _____________.

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Combustion knock occurring in a diesel engine can be caused by _____________.

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A cracked cylinder head on a diesel engine may be indicated by _____________.

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Excessive exhaust temperatures in a two-stroke/cycle dieselengine can be caused by a/an ____________.

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An increase in the fuel injection pump discharge pressure can be caused by a/an _____________.

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Fuel droplets injected into a diesel engine cylinder must have adequate penetration to _____________.

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A diesel engine could fail to start because of ____________.

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Which of the following problems could cause misalignment between the needle valve and nozzle in a fuel injection nozzle?

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Black smoke exhausting from an operating diesel engine can be caused by _____________.

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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 _____________.

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One problem resulting from a diesel engine fuel injector opening pressure being lower than specified by the engine manufacturer, is that the _____________.

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An increase in crankcase pressure generally indicates _____________.

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Combustion gas venting through the expansion tank can be caused by a _____________.

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Faulty operation of diesel engine fuel injection nozzles can be directly caused by _____________.

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A cracked cylinder head in an operating engine may be indicated by _____________.

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When oil vapor, oxygen and hot spots are present at the sametime within a crankcase, which of the following hazards could develop?

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If a few injector spray holes become plugged, the result could be _____________.

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Partially obstructed exhaust ports on a diesel engine can cause _____________.

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Which of the following conditions can cause oil to accumulate in the cooling system of a diesel engine?

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What occurs in the combustion space of a diesel engine cylinder shortly after ignition and before the piston reaches TDC?

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The crankcases of many diesel engines are kept under a slight vacuum to _____________.

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If sludge accumulates on the underside of a diesel engine piston, it will ______________.

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The injection pressure of a hydraulic fuel injection nozzle can be increased by _____________.

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A naturally aspirated diesel engine at full throttle will have an intake manifold pressure ____________.

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All of the diesel engine cylinder firing pressures are normal, yet all of the exhaust temperatures are low. Which of the following situations is responsible for this condition?

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The effective stroke of a constant-stroke, individual, fuel injection pump is varied by the _____________.

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A diesel engine is warmed up and white vapour is noted in the exhaust, this could indicate _____________.

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Late fuel oil injection in a diesel engine can result in _____________.

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One of the factors limiting the amount of load which can beput on a modern marine diesel engine is the ____________.

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Operating a propulsion diesel engine at less than 30% of designed normal load for prolonged periods will result in ____________.

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When a fuel injection nozzle overheats, which of the problems listed can be expected?

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If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase _____________.

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Which of the terms listed below represents the operational speed at which excessive engine vibration is created?

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An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in _____________.

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Water in the fuel can prevent the engine from starting, prevent it from developing full power, or ____________.

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Which of the conditions listed may occur in an operating diesel engine if air pockets form within the cylinder head circulating water passages?

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Which of the following should always be checked prior to starting a diesel engine?

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Which of the following operating procedures should be carried out immediately after any diesel engine is started?

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Late fuel injection in a diesel engine is indicated by low firing pressure with _____________.

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If the coolant temperature is excessively low as it passes through the internally cooled fuel injectors, the injectors may be damaged by _____________.

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When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will be indicated?

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The most crucial time for any bearing with regards to lubrication is _____________.

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A large, low-speed, main propulsion diesel engine is operating at rated load and speed while the vessel is in calm seas. As the intensity of the seas increase, the engine speed governor maintains the same RPM, although the load indicator indicates an in

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If the firing pressures in a diesel engine are high, although the exhaust temperatures are normal, the cause may be _____________.

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High exhaust back pressure will result in an increase in ______________.

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A change in the degree of fuel atomization in a diesel engine would most greatly affect _____________.

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Heat damage to fuel injection nozzles can be prevented by avoiding _____________.

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A loose crosshead plunger assembly in a metering or proportioning pump will cause _____________.

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White smoke exhausting from an operating diesel engine may indicate _____________.

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If a crankcase explosion occurs in a diesel engine, you should stop the engine and _____________.

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Diesel engine lube oil diluted with fuel oil is indicated by _____________.

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When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer, the _____________.

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If it becomes necessary to cutout an individual cylinder of a large, low-speed, main propulsion diesel engine, the fuel to that cylinder should be secured and its ____________.

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A fuel injection valve opening at a pressure lower than normal will result in _____________.

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Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is secured. This problem may be a result of ______________.

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A sudden drop in diesel engine cylinder compression pressure can be caused by ____________.

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The direct cause of a crankcase explosion can be attributed to ______________.

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Air may be bled from the fuel system by _____________.

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A dry-type exhaust muffler clogged with soot, will cause _____________.

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The overspeed trip installed on most diesel engines will stop the engine by shutting off the ____________.

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A main propulsion diesel engine is normally shut down by _____________.

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Air in the fuel lines to the fuel injection nozzles of a diesel engine will cause the engine to _____________.

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In a diesel engine, excessive cylinder liner wear willcause ___________.I. increased blowby II. wear between the piston ring and groove

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Which of the following conditions can cause excessive lube oil consumption in a diesel engine?

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A fuel leak occurs in the high pressure fuel piping between the injection pump and fuel nozzle. This requires immediate repair because of the _____________.

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A diesel engine will lose power if fuel injection occurs too early because the _____________.

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On a large diesel engine installation, crankshaft axial alignment is maintained by the ______________.

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In the common rail system, excessive pressure in the header may be caused by _____________.

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Worn cylinder head valve seats in a diesel engine will cause ____________.

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A diesel engine fails to start because of water in the fuel. In order to start the engine, you should ____________.

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When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?

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If the relief valve on a diesel engine cylinder lifts, the cause could be due to _____________.

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A substantial increase in crankcase pressure could be an indication of a/an _____________.

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Which of the listed conditions will occur if a diesel engine exhaust valve is leaking?

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Which operating condition of a diesel engine is indicated by excessive firing pressures?

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If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST __________.

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Late fuel injection timing is indicated by ____________.

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Permitting a diesel engine fuel oil day tank to run dry can cause _____________.

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Oil accumulating in the exhaust piping or manifold of a diesel engine can be caused by ________________.

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Which of the listed pre-start procedures should be carried out prior to starting a crosshead type diesel engine after an overhaul?

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A diesel engine fails to start due to excessive water in the fuel. Before the engine can be started, the water should be removed from the _____________.

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A change in the degree of fuel atomization in a diesel engine cylinder has the greatest effect on the ____________.

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Lube oil accumulating in the cooling water system of a diesel engine will result in _____________.

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Diesel engine exhaust temperatures may be used to indicate _____________.

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A diesel engine emits blue exhaust smoke as a result of _____________.

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If a diesel engine's exhaust temperature is abnormally high, the cause could be ____________.

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When fuel is injected in a diesel engine cylinder too early, _____________.

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An increase in the air inlet manifold pressure of a diesel engine will result in a/an ____________.

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A leaking diesel engine fuel injector will cause __________.

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The possibility of a diesel engine crankcase explosion will be increased by operating an engine ____________.

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If a diesel engine is smoking excessively under load, the cause could be _____________.

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Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?

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Low cylinder compression pressure and a high exhaust temperature may indicate ______________.

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The main propulsion diesel continues running after you try to shut down. You should now attempt to _____________.

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Air in the fuel can cause _____________.

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One cylinder of a diesel engine is persistently knocking and does not cease when the fuel supply to that cylinder is secured. Which of the following problems may be the cause?

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If the jacket water temperature rises rapidly above normal in a diesel engine, you should FIRST __________.

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What harmful condition can result if a diesel engine is operated at very light loads for long periods of time?

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Immediately after starting a diesel engine, normal raw waterand jacket water pressures are indicated. However, thejacket water temperature continues to rise. If there is nochange in the sea temperature, you should suspect _________.

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Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?

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Clogged or partially obstructed exhaust ports on a diesel engine can cause _____________.

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If a diesel engine were running at 20% overload with a smoky exhaust, you should _____________.

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White smoke exhausting from a diesel engine can result from ____________.

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A crack in a cylinder liner can be caused by _____________.

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Significant retardation of a diesel engine fuel injection timing will result in _____________.

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Persistent knocking in one cylinder of an eight cylinder diesel engine would MOST likely be caused by _____________.

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Some diesel engines are fitted with a thermometer in the cooling water outlet from each cylinder. If the cooling water temperature from an individual cylinder begins to rise, you should suspect _____________.

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Coolant can be lost from a diesel engine jacket cooling water system by leakage from _____________.

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Exhaust pyrometer readings provide an indication of the _____________.

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Sticking of diesel engine piston compression rings may be caused by _____________.

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A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to ____________.

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The most practical way of detecting an overload in one cylinder of an operating large, low-speed, main propulsion diesel engine is to _____________.

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The dripping of fuel from an injector nozzle after injection terminates, often results in ____________.

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White smoke issuing from the exhaust of an auxiliary diesel engine could mean _____________.

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In a naturally aspirated diesel engine, the volume of air intake is directly related to engine ________________.

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White smoke exhausting from a diesel engine can be caused by _____________.

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If fuel injection in a diesel engine begins earlier than the design start of injection, ignition may be delayed because the _____________.

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Crankcase explosions in propulsion diesel engines result from _____________.

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A distorted spray pattern from a fuel injector can cause _____________.

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Diesel engine fuel oil contamination often results in _____________.

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Low compression pressure in a diesel engine can be caused by ______________.

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A dark exhaust from a running diesel engine can be caused by _____________.

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Distortion of the spray pattern of a nozzle or injector may be indicated by a/an _____________.

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Insufficient piston cooling for a large, low-speed, main propulsion diesel engine burning heavy fuels, can result in _____________.

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Combustion knock will most likely occur as a result of using a fuel with _____________.

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If the needle valve in a fuel injection nozzle sticks open, _____________.

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If cooling water flow through the aftercooler is interrupted, the power output of a turbocharged diesel engine will drop because the _____________.

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Which of the listed reasons is the most likely cause of a sudden drop in compression pressure in one diesel engine cylinder?

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Operating a diesel engine for prolonged periods, with a closed freshwater cooling system, at temperatures lower than the normal design temperature can cause _____________.

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Diesel engine operating conditions are indicated by the color of the exhaust smoke. Blue smoke can indicate _____________.

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In an operating diesel engine, preignition can be caused by _____________.

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Which of the conditions listed occurring in a diesel engine would cause carbon deposits to develop in the piston ring belt?

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You are operating a main propulsion diesel engine at a constant load when the jacket water temperature begins to rise. This could be caused by ____________.

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Following an overhaul of a crosshead type diesel engine, the engine is jacked over with the turning gear as part of the pre-start procedure. Which of the listed pre-start procedures should be carried out?

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If a two-stroke/cycle diesel engine is overspeeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?

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One result of operating a diesel engine at light load with excessively low cooling water temperatures is a/an _______.

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Late fuel injection in a diesel engine is indicated byblack or gray exhaust smoke with a _____________.

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Maintaining the lowest possible scavenging air temperature at all times is not recommended due to the possibility of the ________________.

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Which of the following conditions will develop if the flow of "raw" cooling water to a diesel engine is obstructed?

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Prior to starting, the purpose of turning over a main propulsion diesel engine with the cylinder test cocks open, is to _____________.

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A diesel engine is operating under a normal load with low firing pressures and high exhaust temperatures. The most probable cause of this condition is ________________.

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Which of the listed conditions is most likely to cause a crankcase explosion?

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In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______________.

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An indication of a diesel engine air intake being partially clogged, is ____________.

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Increasing the compression ratio of a diesel engine while maintaining the designed rate of fuel flow will result in ____________.

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An indication of an overloaded main propulsion diesel engine is _____________.

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Routine monitoring of a diesel engine should include _____________.

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Failure to open the diesel engine test cocks after a long period of shutdown, prior to starting may result in _______.

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Which of the following conditions may need to be reduced when operating a large, low-speed, main propulsion, diesel engine at low loads?

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Maintaining the proper fuel oil temperature will result in _____________.

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What is the best way of stopping an overspeeding diesel engine?

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Before starting a diesel engine that has an engine driven lube oil pump, the engineer should _____________.

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One cause of diesel engine surging can be a result of _______________.

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High exhaust temperature and black smoke exhausting from an auxiliary diesel engine can be caused by _____________.

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A drop in compression pressure in one cylinder of a diesel engine can be caused by _____________.

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A distorted spray pattern from a fuel injector can cause a diesel engine to have _____________.

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A diesel engine will lose power if fuel injection occurs too late in the cycle, because the ______________.

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A substantial increase in crankcase pressure could be an indication of _____________.

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If a diesel engine runs roughly, which of the systems listed is most likely to be at fault?

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When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?

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A restricted diesel engine exhaust manifold operating under a normal load is indicated by ______________.

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Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?

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Combustion knock can occur in the cylinders of a diesel engine under any condition permitting _____________.

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Excessive diesel engine cylinder exhaust back pressure will be caused by _____________.

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In order to start a large, low-speed, main propulsion diesel engine on high viscosity fuel after an extended shutdown, the ____________.

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Which of the following problems will occur if the needle valve in a fuel injection nozzle sticks in the open position?

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If the coolant temperature is too low as it passes through internally cooled fuel injectors, the injectors can be damaged by ________________.

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White smoke exhausting from a diesel engine can be caused by a ___________.

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To successfully reduce an excessively high diesel engine exhaust gas temperature, you should _____________.

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Which of the listed set of conditions indicates early fuel injection timing?

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One remedy for a high firing pressure, in addition to a high exhaust temperature in one cylinder of a diesel engine, is to ____________.

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The longer the ignition delay period occurs in a diesel engine, the _____________.

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The burning of fuel oil in a diesel engine having a high sodium content, will cause ____________.

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A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to _____________.

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Which of the following conditions is most likely to occur when unburned fuel contaminates the crankcase of a diesel engine?

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The air supplied to a diesel engine is compressed to___________.I. provide heat for the ignition of the fuel II. decrease injection delay

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If a diesel engine turned over at normal cranking speed but failed to start, the cause could be late fuel injection or _____________.

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When high firing pressures and low exhaust temperatures occur simultaneously in a diesel engine, this may be a result of ____________.

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By comparing the exhaust gas output of each cylinder of a diesel engine, one method of determining if the engine load is balanced is by the use of a ______________.

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The ignition quality of diesel fuel becomes less critical as ______________.

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A diesel engine piston crown can crack from ____________.

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A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an ___________.

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With regards to a diesel engine crankcase explosion, the most violent is the _____________. I. primary explosion II. secondary explosion

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Black smoke exhausting from a diesel engine indicates _____________.

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On a turbocharged, medium-speed, diesel engine, which of the following problems is an indication of a restricted air intake passage?

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Which of the following statements represents the reason for rolling over a diesel engine with the cylinder indicator cocks open prior to starting?

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Collapsed hydraulic valve lifters in a diesel engine will result in ____________.

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Late fuel injection occurring at, or after TDC in a diesel engine is indicated by excessive exhaust smoke and _____________.

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A dry-type exhaust silencer clogged with soot, will cause _____________.

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Early fuel injection timing is indicated by the cylinder pressure being _____________.

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Diesel engine piston seizure can be caused by _________.

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In a diesel engine, blow-by _____________.

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The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?

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Load control on a diesel engine is accomplished by _____________.

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When fuel is injected late into a diesel engine cylinder, _____________.

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Higher than normal temperature air passing through the intake of a diesel engine will result in _____________.

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An accumulation of carbon on one of its thermocouples of an exhaust gas pyrometer will ______________.

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The longer the ignition delay period resulting from improper use of low cetane fuel, the ____________.

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Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?

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Which of the following factors tends to increase scale formation on the saltwater side of a heat exchanger used in a diesel engine cooling water system?

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Any increase in the exhaust back pressure of a four-stroke/cycle diesel engine will _____________.

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An increase in diesel engine crankcase pressure generally indicates excessive _____________.

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An automated diesel engine should normally shut down due to _____________.

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A diesel engine using lube oil with too high a viscosity will exhibit _____________.

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Engine operating conditions may be indicated by the color of the exhaust smoke. Black smoke could indicate ____________.

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In a diesel engine lube oil system, which of the following parts should be lubricated first?

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When fuel is injected too early in the injection cycle, it may cause the engine to have _____________.

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Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?

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What color exhaust will be exhibited when a slow speed two-stroke/cycle main propulsion diesel engine, designed to operate on light and heavy fuel oil, is operated on insufficiently preheated heavy fuel oil?

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Bluish smoke in the exhaust of an operating diesel engine can be caused by ______________.

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If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the _____________.

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Which of the following problems could develop due to the accumulation of oil vapors in the crankcase of a diesel engine?

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Which of the following conditions will tend to increase the ignition delay period of combustion in a compression ignition engine?

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An increase in power output of a turbocharged diesel engine operating at a constant engine speed results in _____________.

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The starting air rotates a diesel engine at the proper speed, but the engine fails to start. You should check _____________.

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Diesel engine cylinder head test cocks are used to ________.

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Fuel oil injected into the cylinder of a diesel engine just after the piston passes top dead center, will _____________.

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Individual cylinder performance in a diesel engine is routinely determined by exhaust gas _____________.