Quiz 1 - Engine Design and Testing explores the four-stroke engine cycle, including compression, power, intake, and exhaust strokes, and manifold vacuum.
Intake
Compression
Power
Exhaust
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Intake
Compression
Power
Exhaust
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Intake
Compression
Power
Exhaust
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Intake
Compression
Power
Exhaust
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Intake
Compression
Ignition
Exhaust
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One
Two
Three
Four
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A only
B only
Both A and B
Neither A nor B
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Restricted exhaust system
Uneven compression
Weak ignition spark
Vacuum leak
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2 to 5 inches
At least 100 psi
15 to 22 inches
No more than 20%
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A only
B only
Both A and B
Neither A nor B
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2 to 5 inches
At least 100 psi
15 to 22 inches
No more than 20%
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The engine has leaking valves
The engine test results are normal
The engine has worn piston rings
The engine has a worn camshaft
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2 to 5 inches
At least 100 psi
15 to 22 inches
No more than 20%
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A only
B only
Both A and B
Neither A nor B
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Intake valve not opening
Leaking head gasket
Leaking intake valve
Worn piston rings
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Disable the ignition system
Hold the throttle wide open
Charge the battery
Warm up the engine if possible
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Vacuum test
Compression test
Cylinder leakage test
Test the cooling system for combustion gasses (chemical or exhaust analyzer)
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Vacuum test
Compression test
Cylinder leakage test
Lubricating system gas analysis
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Normal fuel injector noise
Minor exhaust leaks near the engine
Certain emission control devices cycling on and off
All of the above
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