A working, fully operational machine is expected to generate
some noise. A soft hum of the engine or the soft twirl of the motors should be
enough to guarantee that you have properly working equipment. But when you
start hearing something out of the ordinary, it's time to pay attention. It
could be any number of things but chances are that it's due to a loose, broken
or worn out part that needs to be repaired or replaced ASAP.
Common Car Noises
The sound of your engine starting is...
