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Spark plug gap for a 1998 Toyota 4-runner?

The recommended spark plug gap for a 1998 Toyota 4Runner depends on the engine. You need to check your owner's manual for the precise specification. It will usually be listed in the section dealing with maintenance or specifications.

Without knowing your specific engine (e.g., 3.4L V6, 2.7L I4), I cannot provide the correct gap. The gap will likely be between 0.040" and 0.044" but again, consult your owner's manual for the exact specification. Using the wrong gap can negatively impact your engine's performance and fuel efficiency.