What is the difference between gasoline direct injection (GDI) and port fuel injection systems?
A) The GDI high pressure pump is driven by the camshaft
B) GDI uses a low pressure and a high pressure fuel pump
C) Port fuel injection uses just one fuel pump
D) All of the above
Question 2
A vehicle equipped with a coil spring front suspension and a leaf spring rear suspension dog tracks while driving on a straight, level road. Technician A says that a broken center bolt could be the cause. Technician B says defective rear shock absorbers could be the cause. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
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The fuel system should hold pressure if the system is leak free.