.6 Exhaust System

MOTOR VEHICLE ADMINISTRATION – VEHICLE INSPECTIONS

 

11.14.02.06

.6   Exhaust System

A. The exhaust system includes the exhaust manifold and all piping leading from the flange of the exhaust manifold, to and

including the muffler, resonator, and the tail piping.

Procedures:

  1. With engine running and the vehicle on a hoist or lift, visually inspect the exhaust pipes, mufflers, resonators and tail pipes for leaks, deterioration, proper mounting, damage, and general Rusted or corroded areas shall be given particular attention. Holes in the system made by the manufacturer for drainage are not cause for rejection.
  2. Light trucks equipped with a cap or slide-in camper shall have a full length tail pipe extending beyond the rear wheels and exiting beyond the side or rear of the body.
  3. On all other vehicles the tail pipe shall be located as originally designed by the vehicle manufacturer, or if not as originally designed shall extend beyond the passenger or occupant compartment and enclosed cargo area if it is open to the driver or passenger area. The tail pipe shall extend at least to the front of the rear wheels, beyond the rearmost door opening, and exit beyond the side or rear of the body.
  4. Type II school buses only

 

 

Reject Vehicle If:

  1. Vehicle has no muffler.
  2. There are loose or leaking seams or joints
  3. There are holes caused by damage, corrosion, or temporary repairs made to the exhaust pipe, muffler, resonator, or tail Welding or brazing is considered a permanent repair if it does not leak. Elimination of a resonator alone is not cause for rejection as long as the vehicle has an effective muffler.
  4.   Tail pipe end is pinched or obstructed.
  5. The system is not properly mounted, securely fastened, or if the seam of a muffler or resonator on a type II school vehicle faces the fuel tank, fuel lines, or floor of the vehicle.
  6. There are loose muffler baffles; the vehicle is equipped with cutout or similar device; or the system is not original or equivalent.
  7. Any part of the system passes through the occupant compartment, or there are any leaks in the heat exchange boxes or ducts of vehicle using engine exhaust heat to warm the interior of the vehicle.
  8. The tail pipe on light trucks equipped with a cap or slide-in camper or a type II school vehicle is not full length, or does not extend beyond the rear wheels and exit beyond the side or rear of the body.
  9. The tail pipe on all other vehicles, if not as originally designed by the vehicle manufacturer, does not extend beyond the occupant compartment and the enclosed cargo area if it is open to the occupant compartment, to at least the front of the rear wheels and beyond the rear of the rearmost door opening, or does not exit beyond the side or rear of the body.
  10. Exhaust pipe, muffler, or tail pipe is not of a leak proof construction. Flexible pipe that does not leak is acceptable, except on type II school vehicles.
  11. It emits continuous exhaust fumes or smoke which obscures persons or objects from a clear rear view.

12  & 13 ( A type II school vehicles)

Effective as of February 1, 2012