gap sparkplugs

Asked by Jun 25, 2012 at 05:25 AM about the 1991 GMC Vandura G35

Question type: Maintenance & Repair

1 Answer


Somewhere in the engine compartment, there is a sticker with the engine specifications. The spark plug gap should be included. If it isn't there here are the spark plug gaps, not sure what motor you have. 4.3L V6 = .045" Gap, 5.7L V8 = .035" Gap.

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