20.14 Exhaust Emission System. The owner or operator of any new motor vehicle
or new motor vehicle engine beginning with the model year 1968 equipped with an
exhaust emission system shall maintain the exhaust emission system in good
operable condition and shall use it at all times that the motor vehicle or
motor vehicle engine is operated. The owner or oper-
ator of the motor vehicle or motor vehicle engine shall not remove or
intentionally make inoperable within the state of Texas the exhaust emission
system or any part thereof, except where the purpose of removal of the exhaust
emission system or part thereof is to install another exhaust emission system
or part thereof, which is intended to be equally effective in reducing
atmospheric emissions from the vehicle or engine.
The exhaust emission system was installed by manufacturers of motor vehicles
beginning with model year 1968. The inspection of the exhaust emission system
will apply only to those vehicles that are equipped with such a system. The
following exhaust emission systems will be inspected if installed as original
equipment by the manufacturer: thermostatic air cleaner, exhaust gas
recirculation system, positive crankcase ventilation system, air injection
system, evaporative emission system, and/or catalytic converter.
If installed as original equipment by the manufacturer, the catalytic converter
will be considered a part of the exhaust emission system on all 1984 and later
model vehicles. It will be inspected as a part of the exhaust system on prior
to 1984 model vehicles.
NOTE: The inspection of the exhaust emission system shall not apply to motor
vehicles altered and modified to use only a fuel other than gasoline.
NOTE: Vehicles using liquefied petroleum gas as fuel or a combination of
liquefied petroleum gas and any other fuel must bear a liquefied gas tax decal
on the windshield lower right-hand corner showing this vehicle uses liquefied
petroleum gas, before a safety inspection certificate can be issued.
NOTE: A motor vehicle that uses liquefied petroleum gas that is operated by a
public school district or county in this state is not required to have a
liquefied gas tax decal or special use liquefied gas tax decal.
1. Inspection Procedure. Examine visually.
2. Inspect for and reject if:
a. The exhaust emission system has been removed.
b. The exhaust emission system has been disconnected.
c. The plumbing or hoses are loose, broken, leaking, or improperly routed.
d. Air pump (air injection-type) belt is loose, removed, excessively cracked,
frayed or has pieces missing.
e. The exhaust emission system has been altered in any manner to make it
ineffective.
f. The catalytic converter has been removed, leaking, or disconnected on a 1984
or later model vehicle.
3. Gas Cap Testing. Every gasoline-powered vehicle* from 2-24 model years old
will be checked for presence of and by a Department approved "Gas Cap Testing
Device" to determine if the gas cap is missing or defective. The following
vehicles are exempt:
a. Antique vehicles.
b. Slow-moving vehicles.
c. Motorcycles.
d. Vehicles operated exclusively by a fuel other than gasoline.
e. Vehicles newer than 2 years old and older than 24 years old.
Robert Houston
Transervicios S.A. de C.V.
915-592-2082
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