Skylark V6-173 2.8L VIN X 2-bbl (1984)
Spark Plug: Technical Service Bulletins
Ignition - Spark Plug Application & Gap
Bulletin 85-6D-5
Date
May '85
Ref.. No. 85-116-6D
SUBJECT:
SPARK PLUG AND GAP INFORMATION
MODELS AFFECTED: ALL 1981 THRU 1985 BUICKS
Listed below are the spark plugs and gap information for all engine applications used in 1981 thru 1985 Buicks.
A.C. PLUG
EIECTRODE
YEAR
ENGINE
VIN CODE
TYPE
GAP
1981
Pont. 2.5L
5
R44TSX
.060"
Chev. 2.8L
X
*R43CTS
.045"
Buick 3.8L
A
R45TS8
.080"
Buick 3.8L Turbo
3
R45TS
.040"
Buick 4.1L
4
R45TS8
.080"
Pont. 4.3L
S
R45TSX
.060"
Olds. 5.0L
Y
*R46SX
.080"
1982
Pont. 1.8L
O
*R44XLS
.035"
Chev. 1.8L
G
*R42CTS
.035"
Pont. 2.5L
R
R44TSX
.060"
Chev. 2.8L
Z
*R42CTS
.045"
Chev. 2.8L
X
*R43CTS
.045"
Buick 3.0L
E
R44TS8
.080"
Buick 3.8L
A
R45TS8
.080"
Buick 3.8L Turbo
3
R45TSX
.060"
Buick 4.1L
4
R45TS8
.080"
Olds. 5.0L
Y
R46SX
.080"
1983
Pont. 1.8L
O
*R44XLS
.035"
Chev. 2.0L
P
R42CTS
.035"
Pont. 2.5L
R
*R44TSX
.060"
Chev. 2.8L
X
R43CTS
.045"
Chev. 2.8L
Z
R42CTS
.045"
Buick 3.0L
E
R44TSX
.060"
Buick 3.8L
A
R45TS8
.080"
Buick 3.8L Turbo
8
R45TSX
.060"
Buick 4.1L
4
R45TS8
.080"
Olds. 5.0L
Y
R46SX
.080"
1984
Pont. 1.8L
O
R44XLS
.035"
Pont. 1.8L
J
R42CXLS
.035"
Chev. 2.0L
P
R42CTS
.035"
Pont. 2.5L
R
*R43TSX
.060"
Chev. 2.8L
X
R43CTS
.045"
Chev. 2.8L
Z
R42CTS
.045"
Buick 3.0L
E
R44TSX
.060"
Buick 3.8L (Carb.)
A
R45TSX
.060"
Buick 3.8L (MFI)
3
R44TS8
.080"
Buick 3.8L Turbo
9
R44TS
.045"
Buick 4.1L
4
R45TSX
.060"
Olds. 5.0L
Y
R46SX
.080"
1985
Pont. 1.8L
O
R44XLS
.035"
Pont. 1.8L
J
R42CXLS
.035"
Chev. 2.0L
P
R42CTS
.035"
Pont. 2.5L
R,U
R43TSX
.060"
Chev. 2.8L (Carb)
X
R43CTS
.045"
Chev. 2.8L (MFI)
W
R42CTS
.045"
Buick 3.0L (MFI)
L
R44LTS
.040"
