Engine Components
Identify the primary function of the engine piston.
What is to compress the air-fuel mixture and transmit force to the crankshaft?
Describe the role of the radiator in the engine cooling system.
What is to dissipate heat from the coolant by transferring it to the surrounding air?
Define the purpose of an internal combustion engine
What is to create torque?
Describe the primary purpose of engine oil in the lubrication system.
What is to reduce friction between moving engine parts, dissipate heat, and provide engine component protection?
Describe one symptom indicating a potential issue with engine compression.
What is loss of power, misfiring, or white smoke from the exhaust?
Name the component responsible for regulating the opening and closing of engine valves.
What is the camshaft?
Name two components of the cooling system responsible for monitoring and regulating engine temperature.
What are the thermostat and radiator fans?
Proper manifold/engine vacuum at idle
What is 17 - 22 in.hg.?
Name two essential components of an engine's lubrication system besides engine oil.
What are the oil pump and oil filter?
Identify two potential causes of engine knocking or pinging noises.
What are incorrect fuel octane, carbon buildup, or improper ignition timing?
Explain the function of the engine's crankshaft in the internal combustion process.
What is converting the reciprocating motion of the pistons into rotational motion?
Explain the purpose of the water pump in the engine cooling system.
What is to circulate coolant through the engine and radiator to regulate temperature?
An engine is misfiring. A power balance test indicates that when the spark to cylinder #4 is grounded, there is no change in the engine speed. A cylinder leakage (leak-down) test indicates 30% leakage, and air is heard coming out of the air inlet.
What is a burnt intake valve?
Explain the importance of regular oil changes in maintaining engine health and performance.
What is to ensure proper lubrication, prevent engine wear, and remove contaminants from the engine?
Explain the possible reasons behind blue smoke coming from the exhaust of an engine.
What is burning oil due to worn piston rings, valve seals, or a faulty PCV valve?
Explain the role of the timing belt or timing chain in an engine and its potential consequences if it fails.
The timing belt/chain synchronizes the engine's camshaft and crankshaft rotation. If it fails, it can cause severe engine damage due to valves and pistons colliding.
Discuss the purpose of the thermostat in the engine cooling system and its potential impact if it malfunctions.
The thermostat regulates coolant flow to maintain optimal engine temperature. If it fails, it can cause overheating or inefficient engine cooling.
Gives detailed chemical composition, precautionary and first aid information
What is Safety Day Sheets (SDS)
Discuss the importance of maintaining proper oil viscosity in an engine and the potential consequences of using the wrong oil viscosity.
Proper oil viscosity ensures adequate lubrication. Using the wrong viscosity can lead to increased engine wear, reduced lubrication efficiency, and decreased engine performance.
Identify two possible causes of excessive black smoke emitted from the exhaust of an engine.
Excessive black smoke can result from over-fueling or incomplete combustion due to issues like a clogged air filter or faulty injectors.
Identify and describe the function of the thrust bearings in an engine.
What is to minimize crankshaft endplay?
When performing a cooling system block test on the cooling system, the fluid turns from blue to yellow.
What is hydrocarbons in the cooling system?
What is the proper use of a fire extinguisher
The proper method of checking engine oil level
What is engine off and vehicle setting on a level surface?
Discuss the process of performing a compression test on an engine and how the results can help diagnose engine issues.
A compression test measures cylinder pressure. Low compression in one or more cylinders might indicate worn piston rings, valve problems, or head gasket issues.