Air Injection System (A.I.R.) - Rusting Pipes
Number 83-T-67 Section 6 Date 1/84Subject: RUSTING A.I.R. PIPES - 3.8L AND 4.1L V-6 ENGINES - 1981-1983 BONNEVILLE, GRAND PRIX, FIREBIRD, LEMANS
Some A.I.R. pipes from the check valve to the intake manifold may rust through from the inside out. This condition is caused by corrosive exhaust gases.
To reduce this condition, a stainless steel pipe will be used for service parts and for 1984 vehicles.
The A.I.R. pipe is a part of the five year/50,000 mile Emission Warranty.