GM Service Manual Online
For 1990-2009 cars only

SPARK PLUG GAP SPECIFICATIONS

Model and Year: 1985-88 NOVA

The purpose of this bulletin is to provide the spark plug gap for 1985 through 1988 Nova.

The Service Manuals (Section 6D) instructs the user to refer to the Emission Label for this information. Spark plug gap is not included on the Emission Label for this vehicle.

The correct Spark Plug Gap is: .045" or 1.1mm.

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.