Caprice Wagon V6-262 4.3L (1987)
Spark Plug: Technical Service Bulletins
Spark Plug - Revised Recommendations
Number:
87-47
Section:
6D
Date:
DEC., 1986
Subject:
REVISED SPARK PLUG RECOMMENDATION FOR PREVENTION OF PLUG FOULING
Model and Year:
1987 PASSENGER CARS EQUIPPED WITH 4.3L V-6 (VIN CODE Z), 5.0L V-8 (VIN CODE H OR G) AND 5.7L V-8 (VIN
CODE 6)
TO:
ALL CHEVROLET DEALERS
Incidents of spark plug fouling on early 1987 passenger vehicles equipped with 90 degree V6 and V8 engines and R43TS spark plugs can be corrected
by the installation of a higher heat range spark plug. The new plug is a type R45TS equipped with a copper core, P/N 5613957.
A copper core spark plug can be identified by a "dot" after the "AC" logo on the porcelain portion of the plug.
(Example:
AC.R45TS). Every effort should be made to insure that the plugs to be installed are copper core type.
The following carline/engine combinations are affected:
CARLINE
ENGINE
Caprice/Monte Carlo
LB4
4.3L EFI
LG4
5.0L Carb.
L69
5.0L Carb.
LM1
5.7L Carb.
Camaro
LG4
5.0L Carb.
