Full Size Chevrolet V8-305 5.0L (1984)
Distributor Cap: All Technical Service Bulletins
Radio - Ticking Noise
Number :
84-226
Section:
9 (XII)
Date :
Dec., 1984
Subject:
RADIO IGNITION NOISE
Model and Year:
1984 MONTE CARLO, CAMARO, CAPRICE, IMPALA AND CORVETTE WITH 5.0L AND 5.7L V8 ENGINES
TO:
ALL CHEVROLET DEALERS
Some 1984 Monte Carlo, Camaro, Caprice, Impala, and Corvette models with (LG4) 5.0L V8 and 5.7L V8 (L83) engines may exhibit a radio (AM
and/or FM band) ticking noise. The frequency of the ticking increases with increased engine RPM.
The condition may be due to a new, lower resistance resistive brush in the distributor cap and is further aggravated by silicone grease on the cap
terminals.
Repairs can be performed using the following procedure:
1.
Replace the existing brush (commonly known as the carbon ball) and seal with ball, P/N 1989880 and seal, P/N 1875962. (The seal must be
replaced when the ball is replaced.)
2.
Remove any silicone grease from cap terminals and remove any carbon deposits on the contacts inside the distributor cap.