How do most manufacturers prefer technicians prime secondary fuel filters?

A. After installation using the priming pump.
B. After installation by hand.
C. Before the primary filter.
D. Pre-charged before installation.


Answer: A

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Air trapped within a replacement hydraulic unit requires the use of ________ to bleed out the air

A) A dead blow hammer B) A vacuum pump C) A pedal depressor D) A scan tool

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Technician A says that voltage is usually indicated on the horizontal display axis. Technician B says that time is usually indicated on the horizontal display axis. Which technician is correct?

A) Technician A only B) Technician B only C) Both technicians D) Neither technician

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What is the air pressure regulated at on a typical truck or trailer air suspension?

A. 60 psi (4.1 bar) B. 90 psi (6.2 bar) C. 125 psi (8.6 bar) D. chassis system pressure

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A modern Ford vehicle equipped with Fail-Safe Cooling is being diagnosed. The customer says the engine runs rough and the temperature warning lamp is on. Technician A says that the PCM is disabling fuel injectors to keep the engine from overheating. Technician B says that if the temperature reaches 330°F, the engine will shut off. Who is correct?

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

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