(a) A driver shall not use the cut-out of a motor while operating same on any street within the City or operate a motor vehicle without a proper muffler functioning in good order or race the motor of any motor vehicle so as to cause a backfire or other loud noise.
(b) Every motor vehicle and every motor-driven cycle shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and annoying smoke, and no person shall use a muffler cut-out, bypass or similar device upon a motor vehicle or motor-driven cycle on a highway.
(c) The engine and power mechanism of every motor vehicle and every motor-driven cycle shall be so equipped and adjusted as to prevent the escape of heavy fumes or smoke. (1970 Code Sec. 19-139, 140)