| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of the following is not a component in the engine lubrication system?
oil filter |
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pressure relief valve |
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pickup tube |
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differential |
In engine lubrication, oil remains in the oil pan until the engine is turned on. It then gets sucked up the pickup tube by the oil pump and pressurized. This pressure is moderated by the pressure relief valve and the oil is fed through the oil filter into the engine to lubricate it.
What is the function of the head gasket?
to seal the engine block from the cylinders |
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to connect the transmission to the drive train |
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to seal the brake assembly from external contaminants |
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to seal the exhaust system from the drive train |
A head gasket is a gasket that sits between the engine block and cylinder heads to seal the cylinders to ensure maximum compression and avoid leakage of coolant or engine oil into the cylinders.
The spark plugs fire a few extra degrees before top dead center when the engine is running faster. In this case the engine's timing is:
synchronous |
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advanced |
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retarded |
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asynchronous |
Ignition timing defines the point in time at the end of the compression stroke that the spark plug fires. Measured in number of degrees before top dead center (BTDC), the exact point that the spark plugs initiate combustion varies depending on the speed of the engine. The timing is advanced (the spark plugs fire a few more degrees BTDC) when the engine is running faster and retarded when it's running slower.
How are the cylinders numbered in V-type engines?
sequentially from the front of the engine to the back |
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alternating from the front of the engine to the back |
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cylinder numbering varies by manufacturer |
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sequentially from the back of the engine to the front |
In V-type engines the numbering sequence varies by manufacturer.
Which of the following is not a primary function of a vehicle's lubrication system?
clean contaminants |
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quiets engine noise |
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cools engine parts |
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increases fuel economy |
The lubrication system lubricates engine components by putting an oil film between them to reduce friction and smooth engine operation, cools by absorbing heat from engine parts, seals the pistons and cylinders to contain combustion, cleans contaminants, and quiets engine noise.