SPARK PLUG CHANGE ELIMINATES HARD STARTING

MODELS AFFECTED: 1984 LESABRE, ELECTRA & RIVIERA WITH 5.0L V-8 ENGINE

Buick 5.0L V-8 engines built after 10/1/83 and prior to 4/1/84 will be equipped with R46SZ spark plugs with a gap of .060 inches. This change was made to reduce cold weather spark plug fouling. The emission label will indicate the correct spark plug as R46SX gapped at .080 inches. Whenever spark plug replacement becomes necessary, the R46SX should be used.

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.