§ 70.26  MUFFLER.
   It shall be unlawful to operate a motor vehicle unless such motor vehicle is provided with a muffler, which at all times shall be kept closed so that the exhaust is effectively muffled. It shall be unlawful to operate a motor vehicle in such a manner as to emit unnecessary or excessive smoke from the motor of such vehicle.
(Ord. passed - -)  Penalty, see § 70.99