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WorksheetsEngine Performance/Engine Cooling System Final
Total questions: 30
Worksheet time: 14mins
What are the common symptoms of a misfiring engine?
Rough idling, engine vibration, loss of power, and increased fuel consumption
Smooth idling, engine vibration, increased power, and decreased fuel consumption
Rough idling, engine vibration, increased power, and decreased fuel consumption
Loud idling, smooth engine operation, increased power, and decreased fuel consumption
Explain the process of conducting a compression test on an engine.
Checking the tire pressure
Adding more fuel to the engine
Replacing the windshield wipers
Removing spark plugs, disabling ignition system, using compression gauge to measure pressure in each cylinder
What are the possible causes of a decrease in engine power?
Excessive engine power
Dirty windshield
Overinflated tires
Multiple factors such as fuel system issues, ignition system problems, and mechanical issues like clogged air filter or worn-out spark plugs.
Describe the steps involved in performing a vacuum gauge test on an engine.
Connect the gauge to a vacuum port, start the engine, and interpret the reading.
Blow air into the engine, check the oil level, and rev the engine
Remove the spark plugs, pour water into the engine, and listen for bubbling
Connect the gauge to the exhaust pipe, turn off the engine, and interpret the reading
What are the signs of a failing fuel pump in an engine?
Engine sputtering at high speeds, loss of power during acceleration, difficulty starting the engine, and surging or bucking while driving
No issues with starting the engine
Smooth acceleration and consistent engine power
Engine running quietly and smoothly
Explain the procedure for conducting an exhaust back pressure test on an engine.
Use a tire pressure gauge to measure the exhaust back pressure while the engine is turned off.
Connect a pressure gauge to the oxygen sensor port and run the engine at a specified RPM while monitoring the pressure reading.
Connect a pressure gauge to the windshield wiper fluid port and run the engine at full throttle.
Connect a vacuum cleaner to the tailpipe and turn it on to measure the exhaust back pressure.
What are the indicators of a faulty ignition system in an engine?
Smooth acceleration, easy engine starting, and increased fuel efficiency
Smooth idling, increased fuel efficiency, and easy engine starting
Misfiring, rough idling, difficulty starting the engine, and decreased fuel efficiency
Loud engine noise, decreased fuel efficiency, and smooth idling
Describe the steps for performing an engine timing test.
Locate timing marks, connect timing light, aim light at marks while engine is running
Check the tire pressure, refill the windshield wiper fluid, and change the air filter
Replace the brake pads, rotate the tires, and top up the transmission fluid
Remove the spark plugs, disconnect the battery, and drain the engine oil
What are the potential causes of engine overheating?
Low coolant levels, malfunctioning thermostat, faulty water pump, clogged radiator, broken cooling fan
Empty gas tank, broken side mirror, faulty air conditioning
Dirty windshield, worn-out tires, broken radio
Low oil levels, flat tire, cracked windshield
Explain the process of conducting a fuel pressure test on an engine.
Connect a fuel pressure gauge to the fuel rail or fuel line, then compare the pressure to the manufacturer's specifications.
Remove the fuel pressure gauge from the engine and compare the readings to the tire pressure specifications
Pour fuel directly into the engine and observe the reaction
Check the oil level and color to determine the fuel pressure
What component takes the heat from the engine and warms the interior of the vehicle?
Evaporator
Alternator
Heater Core
Radiator Core
The _____________ controls the temperature of the engine using a wax pellet submerged in the engine coolant.
thermoswitch
thermostat
spark plug
upper radiator hose
Coolant flows into the engine, from the Radiator through this hose.
upper radiator hose
lower radiator hose
bypass hose
heater hose
What is the common name for the device that forces coolant to circulate through the cooling system?
Thermostat
Radiator
Water Pump
Muffler Bearing Assembly
This is a picture of a __________
Thermo Switch
Thermostat
Drive Belt
Radiator Cap
This is a picture of _____________
power steering hoses
windshield washer fluid hoses
radiator hoses
fuel line hoses
The typical temperature of an engine cooling system that is operating properly is about _____ degrees.
30-50 degrees Fahrenheit
100-125 degrees Fahrenheit
180-210 degrees Fahrenheit
250-275 degrees Fahrenheit
What is the name of this part?
thermostat
water pump washer
lower hose cap
radiator cap
A common color for new coolant could be _________
blue
orange
brown
purple
The typical cooling system pressure is between ___________
1 and 4 PSI
5 and 7 PSI
15 and 18 PSI
24 and 32 PSI
A car’s warranty may become void if _____ are used.
incompatible fluids
incorrect service procedures
improper intervals
All of the above.
Should the engine be warm or cold when you check the oil level in an automotive engine?
Yes warm
Maybe cold
No warm
Can I ask a friend
The oil level should be between the _____ and _____ _________________________________________________ marks on the dipstick.
add
Full
add (low), full
Don't know where the dipstick is
Why should engine coolant be changed periodically?
Is less expensive in the winter
Make the car run faster
It will change color
The coolant will deteriorate after prolonged use
Modern fuel systems often use _____ fuel filters between the fuel tank and the engine
In the tank
inline
Next to the Water Pump
Could not find it
How often should you change the Oil in a vehicle?
3 months or 3000 miles
Google any vehicle
Manufacturer's Recommendations
Ask your Mom
What maintenance item collects dirt/debris in engine oil?
Oil Pump Strainer
Oil Screen
Oil Filter
Oil regenerator
Green fluid is found under a customers car. This can be cause by:
Leaking water pump
Split cooling pipe
Leaking radiator
Any of these can be the cause.
Where are the pushrods located?
Below the rocker arms but above the camshaft
In the transmission
In the A/C
In the exhaust system
What is an OHV engine (overhead valve)
Camshaft placed in the cylinder block.
Camshaft in the cylinder head.
Engine has two camshafts per cylinder head.
Tralalero Tralala
