Engine Construction & Installation Practice Test

These questions are part of the practice quiz. Start practicing

• What is the name of the crack test strategy that uses metal filings?
• Motor oils are typically ________ to _________% base stock.
• A piston cooling nozzle is aimed at the ____________.
• What is the primary function of an engine brake?
• Which of the following properly defines viscosity?
• An internal combustion engine that relies on atmospheric pressure to fill the cylinders with air is referred to as what?
• Insert bearings perform a number of important functions, including ____________.
• An oil cooler thermostat prevents ____________through the cooler.
• Worn piston rings are known to cause ____________.
• Turbine wheel burst occurs when ____________.
• What role does the engine play when an internal engine compression brake is actuated?
• How does engine displacement affect engine performance?
• Compression release brakes operate by releasing ____________.
• In an in-line 6 cylinder diesel engine, what is the spacing between power strokes?
• A leaking engine oil cooler typically results in ____________.
• The power stroke of a four-cycle diesel engine ends when ____________.
• What does the term clearance volume refer to in an engine?
• A major disadvantage of synthetic oils is they ____________.
• Which of the following terms is used to describe the shortest radial dimension of a cam profile?
• Which of the following does most to define the piston stroke dimension?
• What component is often replaced to improve engine performance and efficiency?
• Another common name that relates to a pyrometer is ____________.
• A piston ring's ability to seal cylinder pressure is most efficient during the ________ stroke.
• Piston cooling strategies may include ________________.
• What is the primary purpose of vibration dampers in engines?
• The major side thrust of a piston occurs during the __________ stroke.
• During engine operation, what role do fuel injectors play?
• Which manufacturing process is used to smooth over any microscopic cracks or pores within a connecting rod after manufacture?
• Engine oil emulsifiers prevent ____________.
• When installing piston rings in a three-ring pack, the ring end gaps should be placed _______ degrees apart.
• What is one consequence of engine overheating?
• The EPA recommends oil filters be hot-drained for ________ hours before disposal.
• In an inline six engine block, which pair of cylinders are considered paired?
• What role does a camshaft play in an engine?
• When a compact engine design is required, a manufacturer may incorporate a(n) _________ piston design.
• Piston ring to cylinder wall contact accounts for ________ of heat transfer to the cooling system.
• The piston ring located closest to the piston crown is the __________ ring.
• The compression stroke of a four-cycle diesel engine begins when ____________.
• What is the appropriate tool to verify total indicated runout (TIR)?
• What is the purpose of incorporating "scissor gear" in an engine?
• What type of material is commonly used for manufacturing high-performance cylinder blocks?
• As a poppet valve receded under normal use, the valve operating clearance ____________.
• What type of test is commonly used for non-destructive inspection of metal components?
• What is the main input circuit to the ECM that controls exhaust brake systems?
• What is often the cause of cavitation damage on a set of wet liners?
• Articulating pistons use a steel crown section and a(n) ____________ skirt.
• Engine damage will occur if exhaust temperature surpasses a threshold of ____________.
• Which of the following is an advantage of compression brakes?
• Which cylinder head flow design arranges the intake and exhaust ports on the same side of the engine?
• When are compression release brakes adjusted?
• What method is used to join different alloys of valve stem and head in a cylinder valve?
• Which component is not part of the cylinder head?
• The purpose of a thermal barrier in an exhaust system is to ____________.
• Which material is the generally preferred material for exhaust manifold construction?
• What can excessive EGT potentially lead to in an engine?
• What is typically used to seal the joint between the cylinder head and engine block?
• Which of the following tools is recommended for checking cylinder block line bore?
• Which component in an engine is responsible for sealing the combustion chamber?
• In machining, what is the purpose of using a dial indicator?
• What is the allowable cylinder head warpage, according to common rules of thumb?
• The engine cooling fan can provide an additional engine drag of approximately how many horsepower?
• What is the function of the oil filter anti-drain back valve?
• Engine oil with the assigned "S" designate tells us it is ____________.
• Which feature primarily contributes to the strength of CGI components in an engine?
• What is the mechanism that connects the crankshaft, camshaft, and numerous other accessories in a heavy-duty diesel engine?
• What is the main function of a valve spring in an engine?
• Where should the desired maximum cylinder pressure ideally occur in relation to crankshaft position?
• What is the primary function of the piston rings?
• When investigating a low oil pressure complaint, which of the following should be performed first?
• Which component transforms the reciprocating action of the piston to the rotating action of the crankshaft?
• If an engine is described as square, what does that imply about its dimensions?
• What is the primary function of the engine oil pump?
• Which factor influences the design of cylinder head gaskets?
• Oil pressure regulating valves operate by ____________.
• What is the primary purpose of a camshaft in an internal combustion engine?
• The steel backing of an insert bearing should be installed ____________.
• Which layer of an insert bearing is utilized for imbed ability?
• A layer of oil between the piston rings and cylinder wall aids in ____________.
• Which metric unit is commonly used to measure cylinder head warpage?
• An engine manufacturer may choose to incorporate more than one spring within a valve position to ____________.
• Crankshaft endplay specifications are generally between ____________.
• Which associated fault could contribute to low exhaust backpressure during exhaust brake operation?
• Which term best describes the dimensional characteristics of an engine that performs heavy haul and vocational work?
• What is the primary benefit of valve overlap in an internal combustion engine?
• Crankcase pressure testing is performed with the engine at ____________.
• Using a steel piston crown has reduced the size of the ____________.
• What is the piston's position during overlap?
• How many crankshaft revolutions are required to complete the two strokes within a two-stroke diesel engine?
• The best method to determine the location of an oil leak is ____________.
• Which tool(s) should be used to inspect a cylinder head for warpage?
• Which of the following components is usually found in a valve train assembly?
• Swept volume in an engine is defined as the volume of air displaced during what movement?
• In internal combustion engines, what can excessive crankshaft endplay lead to?
• Which tool is used to verify crankshaft endplay?
• In a block mounted camshaft engine, which component connects the roller type cam follower to the rocker lever?
• What is a typical material used for manufacturing engine block components?
• Which engine sleeve design interacts with the liquid cooling medium?
• What is one function of a connecting rod in an engine?
• A vibration damper would be mounted to the ____________.
• When an engine brake is actuated on a current truck diesel engine, what is the maximum fueling permitted?
• What is the main purpose of an engine's lubrication circuit?
• Which tool is required to measure cam lobe wear when the camshaft is located within the engine block?
• The intake ports in a two-stroke engine are located in the ____________.
• Which engine manufacturer uses weep holes to prevent coolant from cross-contaminating engine oil?
• Which part of the engine is primarily responsible for compressing the air-fuel mixture?
• Reported benefits of an engine manufactured with CGI technology are ____________.
• An engine with the camshaft in the cylinder head will not require a __________.
• What type of engine design commonly features a squared cylinder arrangement?
• Classification of engine oils falls under the responsibility of the ____________.
• Which term describes the overall breathing efficiency of an internal combustion engine?
• The advent of a one-piece steel piston design was created to ____________.
• What defines the term 'ring gap' in piston rings?
• What type of sensor is used to monitor EGT?
• Which wear test measures the maximum pressure of engine cylinders while cranking?
• A full flow oil filter has become completely plugged. What is the likely outcome if the engine is running?
• What feature is commonly found in dry sleeves?
• A measured limit to exhaust backpressure after the turbo should be which of the following?
• What are some advantages of compact graphite iron?
• Which component is crucial for preventing engine overheating?
• When is valve float more likely to occur?
• What does a dial bore gauge identify in a cylinder?
• What is the primary purpose of a timing chain in an engine?
• Why are valve guides important in an engine?
• Shortened oil change intervals can be expected when using a biofuel and fossil fuel mix above ____________.
• A hydrostatic lock may be caused by ____________.
• Where does cavitation erosion typically occur on a wet liner?
• Technician A says that most current highway diesel engines use the engine ECM to master control of engine braking cycles. Technician B says that some current trucks option engine braking as part of cruise control and directional stability management. Who is correct?
• What is a major advantage of a valve rotator?
• Late model cylinder head gaskets are manufactured from __________.
• What is the primary concern when joining dissimilar metal alloys in engine components?
• During the intake stroke, air velocity can exceed ____________.
• Why is proper alignment critical in engine installation?
• What is the primary purpose of the crankshaft in an engine?
• Which of the following operates at the highest temperatures?
• What is the main purpose of an engine oil pump?
• What is an indication that engine oil has become contaminated with engine coolant?
• In a four-stroke cycle, how many strokes are involved in one complete cycle?
• Why is it important for engines to have a balance of airflow and fuel?
• In an internal combustion engine, what does the term 'TDC' stand for?
• The four strokes of the diesel cycle take place over:
• A constituent of diesel oil that collects in the DPF is ____________.
• The leading cause of engine bearing failure is ____________.
• What issue may arise from a misaligned flywheel housing?
• The primary purpose of the crankshaft is to ____________.
• Bypass oil filters deliver filtered oil to ____________.
• What is the maximum soot loading of engine oil?
• When does energy used to compress the air get lost in relation to the exhaust valve opening?
• What is one characteristic of modern engine valve materials?
• Which of the following conditions is more likely to result in cold sludging?
• What is the primary function of valve stem seals?
• Advantages related to overhead camshaft engines include ____________.
• How many crankshaft rotations are needed to complete all four strokes of a four stroke engine?
• A single-piece cylinder head installed on an inline six-diesel engine will cover _______ cylinders.
• On an in-line 6 cylinder engine, when piston #5 is at TDC on its compression stroke, which valves can be adjusted?
• What is typically a sign of a malfunctioning exhaust brake?
• Exhaust manifold expansion and contraction due to thermal conditions has been improved by having the manifold ____________.
• What recently introduced HD diesel cylinder block manufacturing process contributes to much lighter weight engines?
• Valve overlap occurs when a piston in a cylinder is located at ____________.
• What is a characteristic of a non-detergent oil?
• What API oil classification is suitable for engines fueled by ultra low sulfur (ULS) fuel?
• What function do bearings primarily serve in an engine?
• Which piston ring has a coiled expander?
• An engine oil quality sensor is an electrical device that measures the amount of _________________ within the engine oil.
• Which year was CJ-4 engine oil initiated for use?
• How have modern manufacturers designed smaller engines to meet demands of once larger engines?
• A piston that is elliptical in shape when cold is termed a(n) _______ piston.
• A four stroke camshaft rotates _________ of crankshaft speed.
• The widest lobe on a three lobe per cylinder camshaft is for __________ operation.
• Which cylinder block incorporates the cylinder bore cast within the block assembly?
• Inadequate engine brake slave piston clearance could lead to what potential issue?
• What is the role of a valve spring in an engine?
• When performing a valve adjustment on a cylinder's valves, ____________.
• When is the braking efficiency of any engine brake usually at its highest?
• When the camshaft is located within the engine block, what components may be included in the valve train?
• What is the order of the four strokes in an internal combustion engine, starting with the intake stroke?
• Which oil base stock source is considered a mineral oil?
• Which type of engine component is most likely to experience fatigue due to heat cycles?
• Which component often experiences thermal stress from high exhaust temperatures?
• A piston cooling nozzle sprays engine oil at the ____________.
• Brake horsepower is measured at the engine's __________.
• At what point is cylinder compression dumped into the exhaust when a Jacobs internal engine compression brake is actuated?
• What is the role of Plastigauge in engine assembly?
• A camshaft may directly control the operation of which components?
• What is a common result of improper valve adjustment?