____ is a condition that is caused when gasoline overheats and begins to actually boil within the fuel pump.

a. Vapor starvation
b. Fuel saturation
c. Vapor lock
d. Fuel starvation


c. Vapor lock

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Burners inject air and fuel through a distribution system. The key components of a natural gas burner include (select all that apply):

a. dampers b. impellers c. spuds or spiders d. drums

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While having a discussion, Technician A says that replacement pistons for passenger cars and light trucks are destroked 0.15" to compensate for block and head resurfacing. Technician B says that they are destroked at 0.25". Who is correct?

A. A only B. B only C. Both A and B D. Neither A nor B

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Which type of port fuel-injection system uses a fuel temperature and/or fuel-pressure sensor?

A) Electronic returnless systems B) TBI units only C) Demand delivery systems D) All port fuel-injected engines

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Carry the answer to four decimal places. If A = 0.305 inch, C = 1.0425 inches, and D = 3.860 inches, find B.

Fill in the blank(s) with the appropriate word(s).

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