Engine Performance

Test Bank for Automotive Electrical and Engine Performance

The non-electronic spark advance of an engine is not increasing as engine rpm increases. Technician A says the vacuum advance unit may have a leaking diaphragm. Technician B says the centrifugal advance weights may be stuck. Who is correct? Technician B only A loose spark plug is likely to cause: Premature ignition coil failure A vehicle with an ignition system triggered by a magnetic pulse generator will not start. Technician A says that the air gap should be checked using a go no-go stain...

All overhead valve engines ________. Have the overhead valves in the head An SOHC V8 engine has how many camshafts? Two Torque is expressed in units of ________. pound-feet Horsepower is expressed in units of ________. foots per pound A normally aspirated automobile engine loses about ________ power per 1000 feet of altitude. 3% One cylinder of an automotive four-stroke cycle engine completes a cycle every ________. 720 degrees How many rotations of the crankshaft are required to complet...

The primary (low-voltage) ignition system must be working correctly before any spark occurs from a coil. Which component is NOT in the primary ignition circuit? Spark plug wiring A reluctor is a ________. Notched ring or pointed wheel The ignition module has direct control over the firing of the coil(s) of an EI system. Which component(s) triggers (controls) the module? Pick up coil HEI and EIS are examples of ________. Distributor ignition systems Coil polarity is determined by the ______...

Engine vacuum is being discussed. Technician A says that when the engine is operating under light loads, engine vacuum is low. Technician B says that engine vacuum is high when the engine is operated under heavy loads. Who is correct? d. neither A nor B Ignition spark typically occurs a few degrees _______. a. before top dead center (BTDC) Which of the following is NOT an advantage of an electronic spark control system? b. It allows lower compression ratio engines to be as efficient as hig...

Blue smoke is coming from the exhaust pipe of a vehicle. Tech A says that worn piston rings could be the cause. Tech B says that a bad head gasket could be the cause. Who is right? A. Tech A B. Tech B C. Both D. Neither A. Blue smoke means the engine is burning oil, which could be caused by worn piston rings. Technician B is wrong because a bad head gasket would cause coolant to leak into one or more cylinders, resulting in white exhaust smoke. A vacuum gauge is connected to the intake m...

what component keeps the crankshaft and cam shaft sychronized timing chain or belt what component o the cooling system holds heat in the engine until it reaches normal operating conditions thermostat what exhaust component reduces pollutants catalytic converter what lubricating system component circulates oil throughout the system oil pump what air induction system component contains a trhottle plate that controls engine speed throttle body what air induction system component carries air ...

NB: All answers appear above the respective questions (Answers are above the questions). Electromagnetic induction Which term describes the principle used to create high voltage from low voltage? Both Technicians A and B Technician A says that platinum tipped spark plugs should never be re-gapped after being used in a running engine. Technician B says that spark plugs should not be removed from a hot cylinder head. Which technician is correct? True Some engines that use a gasoline direc...

Automotive Engine Performance Post Test Review 2023;Modules 1 through 5 for AEP Review with complete solution Magnetic pulse generators are commonly used to send data to the computer about: The speed of the monitored component. Technician A says pulse width modulation (PWM) is measured in a length of time, not a percentage of a cycle. Technician B says that the cooling fan relay is usually controlled by the PCM through PWM. Who is correct? Both A and B When the pressure in the intake mani...

ASE 1 - Engine Performance Practice 2023 Questions and Answers with complete solution 2. A technician is checking for piston ring groove clearance. The proper technique includes A. The old ring and a feeler gauge. B. The new ring and a feeler gauge. C. Only a feeler gauge. D. No feeler gauge is required. Answer B is correct. Clean the pistons in a cold tank and then clean the grooves with a ring groove cleaner before measuring. 3. A cylinder power balance test is being performed on a ve...