For 1990-2009 cars

# SPARK PLUG AND GAP CLARIFICATION & SPECIFICATIONS

#### 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 ELECTRODE 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 R45TSK .060" Olds. 5.0L Y *R46SX .080"

1982 Pont. 1.8L O *R44XLS .035" Chev. 1.8L G *R42CTS .035" Pmt. 2.5L R R44TSK .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 R45TSK .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 R45TSK .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 *R43TSK .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 R46SK .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" Buick 3.0L (Carb) E R44TSX .060" Buick 3.8L (MFI) 3 R44TS8 .080" Buick 3.8L (Carb.) A R45TSX .060" Buick 3.8L Turbo 9 R44TS .045" Olds. 5.0L Y FR3LS6 .060"

* Revised from original specifications.

General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.