Which gas is generally considered to be the lean indicator? (The higher the level of this gas, the leaner the air-fuel mixture.)

A) HC B) CO C) CO2 D) O2


D

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?When there is a spiral gear on the camshaft of a pushrod engine, what is its purpose?

A. ?It drives the distributor. B. ?It drives the oil pump. C. ?Both of the above D. ?Neither of the above

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Circuits in a vehicle have a circuit protection device placed in a common path from the battery.

Answer the following statement true (T) or false (F)

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Indicate whether the statement is true or false

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Why are some fuel rails rectangular in shape?

A) Reduces noise B) Increases the speed of the fuel through the fuel rail C) Increases fuel pressure D) Helps keep air out of the injectors

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