*have not fixed the realistic shutoff yet* Move the RPM slider to slow down or speed up engine. - Switch between Illustration and Realistic Mode. - In realistic mode, adjust the fuel bar all the way to the top. and PRESS THE ELECTRIC START 6 TIMES RAPIDLY OR 7 TIMES RAPIDLY to start the engine. If the engine doesn't start, YOU AINT DOIN IT RIGHT BRUH. max fuel recommended. To stop running sound, pull down fuel bar all the way to the bottom and press electric start sound one last time.
Note: The fan Blade does not belong on the crankshaft pulley, but it was the best place to put it. In real life the fan is located behind the radiator. And diesel engines work differently from a gas engine. They are more efficient providing more distance per gallon, but produce more exhaust than a gas engine.