IT16 - Engine Performance

While discussing A/C condensers, Technician A says that a restriction may cause engine temperatures to be below normal. Technician B says that a restricted A/C condenser may be cleaned. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says a thermometer inserted into the coolant reservoir can be used to determine the engine operating temperature. Technician B says a scan tool can be used to read the engine operating temperature. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says that some fuel filters are located on the frame rails of the vehicle. Technician B says that all vehicles a serviceable fuel filter. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

When replacing a fuel filter, what should the first step be?

• Bleed the pressure from the fuel system.

• Run the engine for 5 minutes.

• Loosen the fuel rail bolts.

• Remove the fuel filter.

Technician A says that one way to verify proper engine operating temperature is to use an external temperature gauge. Technician B says that one way to verify proper engine operating temperature is to use a scan tool. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says one can check the engine operating temperature by using an infrared thermometer. Technician B says to check engine operating temperature one should use a hydrometer. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Two technicians are discussing the positive crankcase ventilation (PCV) system. Technician A says during an inspection one should inspect the hoses for cracks. Technician B says that during an inspection the PCV valve should not rattle. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Which must be done before removing the fuel filter?

• Retrieve and clear the DTCs (diagnostic trouble codes).

• Depressurize the fuel system.

• Drain the fuel tank.

• Unplug the fuel pump.

Technician A says that an inoperative PCV valve could cause an engine oil leak. Technician B says that an inoperative PCV valve could cause engine oil to enter the air cleaner. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B

Technician A says that on some vehicles the fuel filter is not serviceable. Technician B says that when replacing the fuel filter, the system must remain pressurized. Who is right?

• A only

• B only

• Both A and B

• Neither A nor B