Automobile Engineering in ME
The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

Enable the pump's fault diagnosis function to operate
Pressurise the fuel system before the engine is started
Supplies a large amount of fuel and thereby creates a choke effect
Warm up and lubricate the pump

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Automobile Engineering in ME
The correct flow of power through the drive train is

Engine main shaft, counter shaft, clutch, final driven gear, drive shafts, wheels
Engine clutch, main shaft, counter shaft, final driven gear, drive shafts, wheels
Engine drive shafts, clutch, main shaft, counter shaft, final driven gear, wheels
Engine clutch, counter shaft, main shaft, final driven gear, drive shafts, wheels

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