1.Technician A says that MAP sensor equipped engines are the most accurate way to control the A/F ratio. Technician B says that MAF sensor equipped engines have the most accurate way to control the A/F ratio. Who is correct? Technician A only Technician B only Both technicians A & B Neither technician A nor B 2 Technician A says that on a carbureted engine, air pressure is acting on the fuel. Technician B says that on an EFI system, air pressure forces the fuel out of the injectors. Who is correct? Technician A only Technician B only Both technicians A & B Neither technician A nor B 3 On a PFI engine, when the air mixes with the fuel, a Homogenous Condensed Vaporized 50/50 mixture is formed. 4 How much voltage is produced by the Bosch coil to ignite the A/F mixture? 10KV 40KV 20KV Reduced engine vibration 5 Which device communicates the drivers intention to the ECM? APP sensor MAP sensor ECT sensor MAF sensor 6 Student A says The fuel pump control module controls the amount of fuel pressure based on demand from idle to full load. Student B says Fuel pump control module is required for all newer gerneration of returnless fuel systems. Student A Student B Both Students A and B Neither Students A nor B 7 Student A says when replacing the fuel pump or related system components, always visually compare the new part with part being replaced to verify you are installing the correct part. Student B says sometimes the part looks different because it has been updated, just install it. Student A Student B Both Students A and B Neither Students A nor B 8 An internally shorted fuel pressure sensor will effect fuel pump operation. True False 30KV 10 Modern vehicles require greater precision in fuel metering for which of the following reasons? Cooler sound from the engine Reduced emissions Reduced engine pumping losses 9 The low pressure fuel pump on a Bosch GDI system is mechanically regulated. False True