Ala. Admin. Code r. 335-3-9-.04

Current through Register Vol. 43, No. 1, October 31, 2024

Section 335-3-9-.04 - Exhaust Emission Control Systems

(1)Air Injection System. Exhaust emission control air injection systems on those gasoline-powered motor vehicles so equipped by the manufacturer shall operate so that:

(a) The air delivery hoses, connections, and air distribution manifold shall be properly connected as installed by the manufacturer and free of obstructions and leakage.

(b) The air compressor drive belt tension shall be within manufacturer's specifications.

(c) There is a positive air flow from the air pump to the air delivery distribution manifold.

(d) The check valve prevents any reverse air flow from the air distribution manifold out through the check valve inlet.

(e) The anti-backfire valve, gulp-valve, air bypass valve, or other similar device with the same function permits the passage of air from the air pump to the exhaust manifold or manifolds, except when the carburetor throttle is closed rapidly from an open position as in deceleration.

(2)Engine Modification System. All vacuum control valves, vacuum lines, mechanical linkage, electrical circuits and switches peculiar to certain engine modification systems shall be properly connected as installed on all 1968 and subsequent model year gasoline-powered motor vehicles so equipped by the manufacturer.

(3)Other Exhaust Emission Control Systems. Any other exhaust emission control system, other than air injection or engine modification which is installed or incorporated in a motor vehicle in compliance with Federal motor vehicle pollution control regulations shall be maintained in good operable conditions as specified by the manufacturer and shall be used at all times that the motor vehicle is operated.

(4) The requirements of this Rule shall apply to all gasoline-powered motor vehicles with the following exceptions:

(a) Vehicles of 1967 or earlier model year.

(b) Vehicles not equipped by the manufacturer with exhaust emission control injection systems.

(c) Motor vehicles with an engine displacement of less than 50 cubic inches (819.35 cubic centimeters).

Authors: James W. Cooper, John E. Daniel

Ala. Admin. Code r. 335-3-9-.04

Effective Date: September 24, 1972. Amended:

Statutory Authority:Code of Ala. 1975, §§ 22-28-14, 22-22A-5, 22-22A-6, 22-22A-8.